There seems to be lots of news coming out of Switzerland since the start of the new year. One of the more interesting one is this...
Yes, it looks like Omega is launching the caliber 321, the very movement fitted to the Omega Speedmaster that went to the moon and some that did not. To my knowledge, this movement were fitted to Speedmaster reference: CK2915-1, CK2998-2, CK2998-6, CK2998-4, ST105003, ST105012 and ST145012.
It would be interesting to see how Omega does this and what models would be fitted with this 'new' caliber.