Update: The speculation posted was probably partially wrong (mostly pricing)...
These are still a possibility:
15" 1.0GHz, up to 2GB RAM, 64MB VRAM
15" 1.25GHz, up to 2GB RAM, 64MB VRAM
All three (12, 15, 17) models will be updated.
Addendum: Based on some final whispers... the previous "software announcement" rumor was actually supposed to read "hardware announcement"....