According to information from the nVidia's official page for mobile GeForce chips, 32 GT200-class shaders pit this part as "GeForce G220M" or "GeForce GT220", above GeForce G210M [16 shaders, 64-bit memory controller, 12.8 GB/s] and below GeForce GT230M [48 shaders, 128-bit memory controller, 25.6 GB/s]. Given the integrated nature of the memory controller, you should expect following characteristics:
DirectX 10.1 Compliant
Around 600 MHz GPU clock
Around 1200 MHz Shader clock
128-bit memory interface
DDR2-800, DDR2-1066, DDR3-1066, DDR3-1333
12.8 - 21.3 GB/s memory bandwidthAround 20W TDP
You can expect this part coming at the end of 2009, in time for holiday shopping season.