While it's great news that the hosted version of Phabricator is free for small projects, I'd like to point out that the open source version has always been free and they're the same :)
>This isn’t a scaled-back version of Phabricator. We only build one version, and that version is free, open, and built to scale. There are no special keys or licenses needed. No community or enterprise versions. Code quality and engineering efficiency is too important to us to split up features. When you’re ready to move off of the free tier and bring your whole company, you’re welcome to upgrade on Phacility, or take your data with you and host it locally. We’re glad to have you as a customer either way.
Although I'm not OP, I use Phabricator (https://www.phacility.com/phabricator/) at work and I absolutely love it. It's much better than Github for our use case, as it has subtasks, task merging, priorities, Kanban workboards etc. Tasks can block another task (for instance, the "Implement OAuth2" task can block the "Build a private API" task). You can flag objects for later and set specific privacy rules for every task (for instance, you can hide a security bug from the public until it's fixed). It's all tightly integrated with other Phabricator apps, which is a plus. Also, it's open source.
Hoping they make that distinction as well.