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.

Comcode: Powerful but simple content-enrichment language.

Media embedding: Easily integrate/attach common video and image formats, as well as embeds for common sites such as YouTube (just by pasting in the URL).

Easily create cool effects: Create scrolling, rolling, randomisation, and hiding effects. Put content in boxes, split content across subpages. Create XHTML5 overlays. Place tooltips.

Customise your content for different usergroups

Create count-downs and hit counters

Automatic table of contents creation for your documents

Custom Comcode tags: Set up your own tags, to make it easy to maintain a sophisticated and consistent design as your site grows.

Embed pages within other pages

Full control of your vision: Control hundreds of settings. Strip Composr down. Reshape features as needed.

Full templating support: Reskin features to look however you want them to.

No navigation assumptions: Replace default page and structures as required.

No layout assumptions: Shift content between templates, totally breaking down any default layout assumptions.

Embed content entries of any type on your pages

Theme Wizard: Recolour your CSS and theme images in just a few clicks (Composr picks the perfect complementary palette and automatically makes 100's of CSS and image changes)

Logo Wizard: Generate a basic logo for use on your site

Built-in template and CSS editing tools

Interactive CSS editor: Quickly identify what to change and preview.

Dashboard: View a checklist of things that need done, software upgrade information, latest Composr news, posts in the staff forum, staff notes, useful links, and more.

Audit: View logs and statistics of just about anything with the site and Composr system.

Site statistics: View comprehensive graphs and statistics across a wide range of metrics. Set your own KPIs and get notified when they are reached.

Security: Control site access (including IP bans), privileges, members / usergroups, and word filters.

Structure: Manage and upgrade addons, define zones, configure chatrooms and forums, manage menus, create redirects, and edit the sitemap.

Style: Whitelist the software, manage emoticons, manage themes / run the theme wizard, run the logo wizard, and translate / rephrase the software.

Setup: Set a wide variety of options for your site depending on what addons you have installed.

Tools: Run full or incremental backups, scan for broken URLs, clear the cache or run optimisation tools, edit the code, run Commandr, run the upgrader, run health checks, import content from another site, make and send newsletters, run server checks and view PHP info, run privacy purging or downloading, send an e-mail through the software, and view Composr contributors

Content: Manage all of your content for your site

Help: Search across the site or the tutorials for something

Conflict detection: Detect when multiple staff are trying to change the same thing at the same time.

Examine action logs: See exactly who has done what and when

Commandr: Optional use of a powerful command-line environment (for Unix geeks). Use unix-like tools to explore and manage your database as it if was a filesystem, and perform general maintenance tasks.

Aggregate content types: Design complex content relationships, cloning out large structures in a single operation.

Content versioning: See revisions of certain content

Integrate polls into your website: Gauge visitor opinion.

Community involvement: Users can submit polls and comment and rate them.

Multiple polls: Showcase different polls on different areas of your website.

Archive the data from unlimited polls

User content submission: Allow users to submit to any area of your site. Optionally enable validation so staff must approve the content before it goes live.

Public awards: Give public awards to your choice of “best content”

Per-usergroup privileges: Give special members access to extra features, like file storage

Recommend: Visitors can recommend your website or a page to other visitors. Control who can specify their own custom message and those who must use the default (spam prevention).

Members can report content to you for review via "Report This" links (which creates a Support Ticket with a copy of the content at the time of reporting). You can also turn validation off for content to hide it after a certain number of reports.

Make unlimited chatrooms each with your choice of access restrictions.

Moderation: Moderate messages and ban troublesome users.

Integrate shout-boxes into your website

Instant messaging: Members may have IM conversations with each other, or in groups. Members receive an archive of the conversation in Private Topics once closed.

Site-wide IM: Give your members the ability to pick up conversations anywhere on your site.

Sound effects: Members may configure or upload their own.

Download chatroom logs

Blocking: Choose to appear offline to certain members.

Allow members in certain usergroups to make their own chatrooms, and control when they expire based on inactivity time.

So many ways to earn points: From submitting different content to logging in, you control the economy.

Integration with eCommerce: Members can buy advertising space, temporary privileges, gamble, and more! Members can also use points for store discounts.

Send points: Members can send each other points to reward each other

Escrow points: Members can escrow points with a written agreement in exchange for a product or service. The recipient does not receive the points until both members satisfy the escrow. Escrows can be disputed to staff.

Gift points: Enable the gift points balance so members can send a limited amount of points to other members without it deducting from their spendable points balance.

Leader board: Create some community competition by showing who has the most points or who earned the most points for a configurable time interval

Auditing: View every points transaction that has taken place, and reverse any of them, in the points ledger.

Profiles: Browse through member points profiles, and see what virtual gifts members have been given.

Ranks: Create usergroup promotion ladders with rank points; members rank up as their rank points increase. Members can view their rank and unlocked / unlockable privileges on their profile.

Conduct a poll on a forum topic to gather user opinions and feedback

Add unlimited choices

Define a range of acceptable number of choices on which members can vote

Control when voting is open or closed

Control if guests can vote or if you must log in

Require making a post (reply) in the topic when voting

Allow (or deny) the ability for members to revoke / change their vote

Show or hide results from the public

Enable viewing of which members voted on which choices

Add a date/time voting automatically closes

Enable weighted voting through the points system

Enforce topic poll options on a forum basis including defining default or required choices

Show topics on your website through blocks

Comment integration: New topics appear in the ‘comments’ forum as you add content to your website. Members can watch these topics so they never miss an addition to your website.