It has not been that long since I upgraded to AM2 and cannot afford another complete upgrade. Like a lot of others here I can probably afford the new CPU upgrade if it is AM2 compatable. Later when the reports are in I might be able to upgrade the rest of the system if it seems worthwhile.
I really hope AMD has people like me in mind.
You will be fine for a AM2+ processor upgrade. They will run but you will not have full 100% processor support under AM2. Certain functions will require AM2+ but the main functions will work fine and you will still have the new core design advantages.
AMD upgrades should hold until the end of the year or next summer. Once they get the new chipset out and optimized then the 45nm processors will follow. The combination of the 2 along with R700 support due out next spring is what will put AMD back in the game. The redsigned R600 due out in August/September along with the newer R670 will be the next boost and will also make the new chipset/processor shine.
AMD had a 1 year setback in buying ATi but it was expected is only temp as they reconfigure so both work together. As of the end of the year they will be making a major comeback.