looking forward to attending this, thanks for organizing
If you'd like to learn more about Phabricator's project management and roadmap functionality, I invite you to test it live on the test instance at http://fab.wmflabs.org/ . Alternatively, you can also peruse http://phabricator.org/ and http://phabricator.org/tour/ . I strongly encourage everyone to do so before the IRC discussion, so we can all have a more informed chat about Phabricator and the other options currently under consideration.
I've taken a look but I think it would be awesome if we could set up repositories and do a mock code review. I'd love to see how that integrates with tasks (so we can compare with gerrit -> bugzilla for example).