Re: Barcelona is going to get some improvements on the integer end of things as well. I don't expect it to beat Conroe in IPC, but it should narrow the gap compared to K8.
If this is all it can do, you should expect further erosion of AMD's ASPs, especially when Intel counters it with 45nm Penryn, not to mention Nehalem in 2008. I wonder what AMD's plans are after Barcelona. I wouldn't expect another major micro-architecture change in time to compete with the next Intel onslaught.