MSI has published a list of its motherboards that support AMD's new Bulldozer chip, you can check it out over here.

MSI released the mainboard BIOSes with full AMD AM3+ 8-core CPU support for download today. Enthusiasts that own one of the listed mainboards1 can now download the update to support the latest AMD AM3+ 8-core CPUs (B2 Stepping). For those planning to purchase a new mainboard, if the box is labeled with "Supports AM3+ CPU with New BIOS," the mainboard will support the powerful AMD AM3+ 8-core CPUs out of the box. Enthusiasts that have purchased a mainboard that is on the list of compatible mainboards can update the BIOS themselves to support the latest AM3+ 8-core CPUs. Also, new in this BIOS update is official support for MSI's proprietary ClickBIOS II system optimization tool for all AMD 900 mainboards. The graphical UEFI BIOS provides mainboard-level support, and exporting OC Profiles to USB drives offers unparalleled convenience.

Support for Latest AMD AM3+ 8-core CPUs Out of the Box with Designated Mainboards
Starting today, enthusiasts can purchase MSI mainboards with a "Supports AM3+ CPU with New BIOS" label on the box. The labeling indicates that the mainboard has been updated with the latest BIOS and already supports the AMD AM3+ 8-core CPUs (B2 Stepping), so users can enjoy the extreme performance of the next-generation processors straight out of the box. Buyers of MSI mainboards on the list of compatible models will not need to buy a new mainboard. Once they update to the new BIOS, their mainboard will be ready for AMD AM3+ 8-core CPUs.

ClickBIOS II on all MSI AMD 900 Mainboards
All MSI AMD 900 mainboards now also come with MSI's proprietary ClickBIOS II UEFI. System settings can be adjusted using the mouse, and the ClickBIOS II utility also supports online driver updates, BIOS updates and full-system backups. Also, for the first time ever, OC profiles can also be exported to USB drives under UEFI, a very convenient feature for overclocking enthusiasts.