The PS3 is on a 10-year model, I guess Sony wants to keep it that way.
A free client download for 2.0 will be given at the end of the year, and that's when PS3 beta starts. The actual launch of the PS3 will be early next year.
Given the delays of the patches, it's likely that 2.0 will be delayed, but I doubt it will be anything more than a few weeks.
While 2.0 will be rebuilding server structures and the user interface (and adding in a lot of missing features that 1.0 can't do it seems), the zones/world is planned to be rebuilt/renovated a few patches before that if I'm not mistaken. Edited, Jan 19th 2012 10:55am by UltKnightGrover