I seem to remember a thread about them getting bumped to .224 and you basically have a 223AI or some such thing.
Ruger was super close to coming out with the 22-204 at one point - if I remember the thread correctly.
Had this conversation with JB over some red beans and rice and he said it might sell a couple of rifles...
He's really right in a matter of fact way 99.9% of the time.
But let's face it, a 22-204 or 223AI isn't really anything the 222 Magnum hasn't already done....
Except for the whole readily available brass thing.
I work a block from Cabela's here in town, spend a lot of lunch hours there. Can't say I've ever seen 222 RM brass on the shelf. BUT today - ordering from the net isn't all that hard and scary either.
I don't know of anyone offering the 222 RM right now in a factory rifle though.