Details, as predicted, out today. Press release here.
UPDATE (5:05PM): Incidentally, I was a lot more interested in Doctor Atomic before reading this recent-ish review by Alex at Wellsung.
UPDATE (8:10PM), with bump: Complete production-by-production casting is already on the Met's website here.
UPDATE (8:30PM): Not only all the productions but all the subscription packages for 2008-2009 can be seen online.
Only Wednesdays, Fridays, and Saturday matinees still have subscriptions of more than six operas. Every other evening has had its subscription size set to six performances. I don't have last season's subscription book here, but I believe this cuts down (from 7 or 8) the length of more than one evening's subscription serieses, allowing a new one to be added.
Longtime subscribers in particularly good seats on these evenings may be quite unhappy.