That depends on several factors. Here are some pros and cons of each:

It is not recommended you do this because you may run into issues. For example, some changes were made in crypto_master.php and data/upgrader2.php prior to the first v11 alpha. These changes will result in a broken upgrade unless you already pulled these changes from git. Similar situations could happen in the future as well.

It is recommended you either discard the git install and use a fresh install from the Downloads, or to maintain a git install and a bleeding-edge release install separately. Do not combine the two.

Absolutely! Frequent changes may be made to both bundled and non-bundled addons. Bundled addons will be updated via the upgrader. For non-bundled addons, you will have to update them through the addons management screen (Admin Zone > Structure > Addons). You will be informed which ones need updated.

Once version 11 reaches release candidate, we do not expect frequent updates to non-bundled addons anymore. But it is still good practice to check after every update.

Yes, for basic non-custom v10 sites. However, expect some issues to arise in the process. And please report those issues to the tracker.

For v10 sites with non-bundled addons or customisations, upgrading to v11 will likely break the site until you update the non-bundled addons or temporarily remove the customisations.

We aim to have the upgrader fully functional for a large majority of types of sites and for sites using non-bundled addons by the time version 11 reaches release candidate stage.

We do not recommend upgrading production v10 sites at this time until v11 reaches stable.

Yes (probably). Always remember especially during alpha and beta phases that things can break. Please make backups first. And let us know on the issue tracker if an issue occurs.
 

Note: You cannot upgrade from 11 alpha to 11 beta without first upgrading to 11.alpha4 (if you are not already on 11.alpha4).

As of July 22, 2024, we entered beta status where our focus is now smashing bugs and stabilising the software. All planned features have been implemented for 11.0 (and most others deferred to 11.1 or later), though we may still merge in a few minor features or tweaks. The upgrader has been tested on a typical non-custom v10 site.

We will be releasing several beta versions in the beta phase.

We do not know when we will be able to release the first Release Candidate or stable versions at this time.

These plans are all subject to change without notice.

Support for integrating popular forum software: See our download page for a list of supported forums.

Share login credentials: Login to the Composr site with the same usernames/passwords as your forum.

Share usergroups: Control website access based on someone's forum usergroup.

Emoticon support: The emoticons on your forum will also be used on your website.

(Conversr only)

Virtual Forums: Find posts made since you last visited or within a time frame.

Remembers your unread posts even if you frequently change computers

Recent activity: See what topics you recently read or posted in

Unanswered topics: Find which topics have not yet been answered

RSS and Atom support

The usual: Categories, forums, topics, posts, topic polls, announcements / pinning, sinking, quick reply, topic closing

Forum and Topic tracking: Receive notifications when new posts are made on monitored topics and forums.

Password-protected forums

Present an 'introductory question' which members must answer or agree to before accessing a forum.

Full moderator control: Determine who may moderate what forums.

Inline personal posts: Whisper to members within a public topic; only those members will see the post.

Over 50 bundled emoticons: Also, support for batch importing new ones

Multi-moderation: Record and perform complex routine tasks; make post templates for those tasks.

Mass-moderation: Perform actions on many posts and topics at once.

Post preview: Read a topic's first post directly from the forum-view. Also see the latest posts when making a new post.

Highlight posts as ‘important’

(These features pertain to Conversr only)

Profiles: Browse through and search for members, and view member profiles.

Multiple usergroups: Members can be in an unlimited number of different usergroups. They can also ‘apply’ to join new ones.

Social networking: Create and browse friendships.

Custom profile fields: Allow your members to add extra information which is relevant to your website (or to their subcommunity), and members can set privacy settings on them.

Promotion system: Set up a usergroup rank ladder so members advance the ranks through their rank points. Members can view rank on their profile rank tab including unlocked and unlockable privileges.

Private Topics: A special kind of private messaging system between 2 or more members. Think 'on-site e-mail inbox'.

Invitation-only websites: Restrict registrations from the public; existing members can invite others to join.

Allow members to create and manage clubs (personal usergroups).

Avatars: Include avatars that members can pick from, or allow members to upload their own.

Member signatures, photos, and personal titles

Users online: See which members are currently online (unless they logged in as invisible)

Account pruning: Find and delete unused accounts, or merge duplicate accounts, based on defined criteria.

CSV files: Import and export members using CSV files, including support for automatic creation of custom profile fields and usergroups – great for migrating data

Users can communicate with staff privately through Support Tickets.

Assign to individual staff: Includes the ability for staff members to “take ownership” of raised issues, and for staff to discuss.

Allow users to e-mail in their tickets and replies to a designated e-mail address

Expanded access granting: Grant third party members access to individual tickets.

FAQ integration: Automatically search FAQs before opening a ticket.

Multiple ticket types: Set up different types of support tickets, with different access levels and fine-grained ticket notification settings.

Anonymous posting: Allow staff to post anonymously or as a designated support operator account so that customers don't always expect the same employee to reply.

Merging: If customers open multiple tickets for the same issue, you can merge them.

Closing: Let customers close tickets that are now resolved, or do it yourself.

Filtering: Filter the tickets you see by status and ticket type.

Paid membership: Sell access to sections of your website, or offer member privileges.

Shopping cart for running an online store

Extendable framework: Programmers can easily add new product types to sell, or payment gateways / tax services / shipping providers.

Multiple payment gateways: Accepts payments via PayPal or other gateways developers may add, and manual transactions (cash/cheque).

Invoicing support: Including status tracking and online payment tracking.

Basic accounting support: Input your incoming and outgoing transactions to get a basic ledger, profit-and-loss, and cashflow charting.

Currency conversions: Perform automatic currency conversions within your website pages (requires an API key).

Random quotes: Put random quotes (e.g. testimonials) into your design.

Awards: Showcase your most popular content, and optionally award the submitter with points.

Tags: Set keyword tags for content and display tag clouds.

Recent content: Automatically feature links to your most recent content (via main_multi_content block).

Show website statistics to your visitors (via stats graphs or page hit counters).

Random content: Feature random content from your website specified via a sophisticated filtering language.

Automatically create newsletter issues highlighting your latest content

Double opt-in: Prevent false sign-ups by asking subscribers to confirm their subscriptions.

Host multiple newsletters: Visitors can subscribe to the ones they want.

Flexible mailings: Send out mailings to all members, to different usergroups, or to subscribers of specific newsletters.

Welcome e-mails: Send multiple welcome e-mails to new users automatically, on a configurable schedule (Conversr-only).

Bounce cleanup: Automatically clean out bounces from your e-mail list.

Unsubscribe: Recipients can easily unsubscribe from newsletters through an unsubscribe link provided in the e-mail.

Change settings: Newsletter subscribers can change their subscription settings on-site.

Drip sending: Prevent overwhelming your mail server or outbound limits.

Choose what is searchable

Boolean and full-text modes

Keyword highlighting in results

Search boxes to integrate into your website

Logging/stats

OpenSearch support: Allow users to search from inside their web browser.

Results sorting, and filtering by author and date

Search within downloads: Including support for looking inside archives.

Composr fast custom index: Support full-text searches in instances where your database does not

Multiple types: Each one can specify its own width-by-height (e.g. skyscraper).

Smart banners: Integrate text-banners into your content via keyword detection.

Broad media compatibility: Image banners, external banner rotations, and text banners.

Determine which banners display most often

Run a cross-site banner network

Hit-balancing support: A site on a banner network gets as many inbound hits as it provides outbound clicks.

Targeted advertising: Show different banners to different usergroups.

Track banner performance

Use the banner system to display whole sets of sponsor logos or partners

Supports Geotargeting

Periodic content reviews: Reminders to check (or remove) banners