Yes Rolling is Development Testing. It has not been publicly announced. Not ready for prime time yet. Currently Rolling is suitable for Development testers, QA minions, and assorted Linux Monkeys only.
We are attempting to upload a butt load of package from Cooker to Rolling main/testing. Don’t upgrade your system with this enabled until this is complete. Package groups like KFrameworks, KApps, Plasma desktop, and Qt will break things or break your desktop if the are partially upgraded. All those groups need to have the complete package stack before upgrading.
We’ll let Y’all know when this is done. My best guess is 1-3 days.