My current thoughts lead me to believe no rotation because all the rotations seem really weird and would get rid of very basic cards (heck, if we rotate just NXD-on we lost Energy Switch, Super Rod, Energy Retreival, etc.). Anything past NXD-on and we lose a ton of search cards along with Prism and DCE, two cards that seem unlikely to leave the format for various reasons. It's very possible that there could be a NXD-on rotation, but based on the current outlook, no rotation seems to be the most likely (although personally I would love to see a DRX-on format because it would open the doors for a huge amount of creativity, and a format without catcher would be really interesting.)