ASRock is trying to be the first to produce an AM3+ motherboard supporting AMD "Zambezi" processors.

Based on artwork sent in by ASRock, the company is gearing up to be one of the first manufacturers to release a motherboard supporting AMD's next-generation "Zambezi" Fusion Black processors. The board will be named the ASRock 890FX Deluxe5 and based on the AMD 890FX + SB850 chipset.

Slated for a release by the end of February, the board's AMD3r2 (aka AMD3+) CPU socket will be compatible with existing socket AM3 Phenom II and Athlon II processors as well as the upcoming 8-core AMD3+ processors. For the gamer, the motherboard will support AMD Quad CrossFireX, 3-way CrossFireX and a two-card CrossFireX setup.

Bulldozer is an AM3+ socket. I presume that means it will work in older AM3 motherboards. However, "something" (don't know what) will be missing -- except in AM3+ motherboards. That "something" may not be needed by many folks. And, being able to buy a MB now that one could plug a Bulldozer in later could be a good choice for some.

AMD is rumored to be releasing a 9xx series chipset along with Bulldozer to make all features of Bulldozer available as designed.

Compatible with existing AM3 processors !! that's huge. AMD does it again if this is true.

Edit , but will the Bulldozer CPUs be backwards compatible with the old socket ??

Design Solutions for the “Bulldozer” 32nm: Showcasing AMD’s 32nm technology and leading-edge design techniques, this session will discuss the power savings, performance improvements and new competitive features offered up by “Bulldozer”. Session date and time: Monday, 2/21, 3:15 p.m.
40-Entry Unified Out-of-Order Scheduler and Integer Execution Unit for the AMD “Bulldozer”: This session will be used to dive even further into the Bulldozer architecture to understand its out-of-order execution set and how the integer unit performs. Session date and time: Monday, 2/21, 3:45 p.m.

An 8MB Level-3 Cache in 32nm SOI with Column-Select Aliasing: Interested in the technical and design details of “Orochi,” AMD’s upcoming high-end desktop and server processor? This session will discuss the new technologies and power-saving features used in the design. Session date and time: Tuesday, 2/22, 2:30 p.m.
A Low-Power Integrated x86-64 and Graphics Processor for Mobile Computer Devices: This session will look at AMD’s first generation Fusion processor, the AMD E-Series APU, formerly codenamed “Zacate,” which combines the power of an x86 CPU and AMD RadeonTM graphics manufactured on a 40nm die. You’ll learn how it was designed and how to optimize performance and energy usage. Session date and time: Tuesday, 2/22, 4:15 p.m.