Will the new windows version be compatible with the 32 bit processors? im using an amd 2200+ and i dunno if it will the same or better performance when i use win64
Nope, won't work.
XP 64 Bit though isn't going to be much if any different in functionality afaik its just going to be optimized to utilize the full potential of a 64 bit processor.
So just stick with your XP regular unless you get a 64 bit processor before XP 64 comes out.