Good news! Yesterday (for those who aren't on private), the board approved the resolution to adopt Cassandra as a top level project, you've graduated!
Now your last incubator read should be the graduation guide, it explains how to get the TLP infra set up. In short the mailing-lists and the repo will be moved, you'll get your final domain name and Jonathan will get access to committers admin. Many of you are now in the project management committee. Enjoy! Matthieu