I would not call that a "delay". Not like it's going to be months or years late like some guns we know. If they show up on the 25th you will be one happy camper. I don't know anything about the release date.
...but I would like to say: a .30 cal full auto will cost you more than the gun in pellets. I'm definitely going with the .22..and I will be slinging Crosman Premiers at $4 per tin in full auto. That's the smart move.
of course if your Hunting with it, a .25 or .30 would be awesome. That Airgun Evolution guy could really do number on those pigeons with one of those!