A mini-update:
Well, the first Bulldozer is coming down in price, so it starts to get interesting on a price/performance basis. Its what I would buy today -- if I did not have what I already have.
An updated "Bulldozer" is on the road map according to articles this week (based on AMD FAD conference call). Between Windows 8 improvements (public beta due soon) and a rumored 10 to 15 percent improvement in the CPU itself, it should compete with Sandy Bridge. If Ivy Bridge doesn't really perform a lot better, things could be closer for AMD.
Interestingly, its believed that AMD's APU aimed at notebooks (4 core CPU and large GPU on one chip) will be preferred over the Intel Sandy Bridge and Ivy Bridge parts. AMD ULV Trinity wins on graphics performance and power consumption (according to AMD FAD report). So, in the near future, notebook buyers might be ending-up with AMD in their notebook.
AMD Trinity also wins for those millions who want a basic desktop for cheap.
AMD ULV Trinity AMD to Win Ultrabook Market???
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ATI Sapphire HD7970 OC - Eyefinity 5760x1200 24", 1xDell-U2410 H-IPS + 2xHP-ZR24w S-IPS, Extended 23" Samsung cPVA, Ceton InfiniTV 4, Bulldozer FX8150@4.5GHz w/Swiftech Water Cooling, 16GB GSKILL PC3 @1866, ASUS Sabertooth 990FX, Corsair 120GB SSD, WDigital + 3x Seagate + Hitachi + 2x WD Ext = 10.0TB, Sony DVD, OCZ ZX 850W PSU, CoolerMaster HAF922, TM Warthog HOTAS, TM T-Flight Stick X, TM Cougar+FSSB & CH Pedals, Saitek X52 Pro & Pro Combat Pedals, TrackIR5 w/TC Pro, Windows 7 HP 64b