amdfangirl :
Still better than Intel, at least you can buy a AM3 CPU (or if you have a spare), stick it in your old AM2 and upgrade to a better motherboard.
So much nicer than Intel with their concurrently produced LGA 775, 1155, 1156, 1366.
LGA775 wasn't bad. If you got a decent mobo in 2005/2006ish you could upgrade all the way to Penryn or if you wanted (not sure why anyone would want to) put a Pentium D into a newer mobo (ewwwwwww).
LGA1156 came out at the wrong time. It only really had 32nm while LGA1366 had 2 gens of CPUs.
My bet is that LGA1155 and LGA1355 or 2011 (or whatever Intel uses) will also support 2 generations while the next step after Ivy bridge, Haswell, will probably sport a new socket and possibly boast DDR4 since Intel said thats about when DDR4 should hit.
I mean major mArch changes, new memory tyes and all kinds of things can make it near impossible to use the same socket. Thats the reason, most likley, why AMD is not supporting BD in older sockets so they can really push it to be better than Phenom II.