In print (in this case being Computer Arts Magazine, one can assume they are rather well informed) I found this. Forget about fiscal years. Just plain Old World years. Think Christmas.

The June issue of Computer Arts has everything for the graphic addict - the full lowdown on the best plug-ins for Photoshop and who's using them, fast and effective Website redesign techniques in Dreamweaver, T-shirt design in Photoshop and exciting news of Illustrator 11, InDesign 3 and Photoshop 8 - all set to launch by the end of this year.

So I guess you have to decide if you want to wait... I have heard most of the improvements will be geared towards the professional digital photography market (also in CA), so you might not need to wait for a hefty 5 or 6 more months. PS7 is rather complete, I think.