Hmmmm.... Sorry, I figured they were different sockets.
According to the following site, the new mobile Trinity APUs as still socket FS1, but have been revised to revision 2; i.e. FS1r2. Unknown if it will work because the CPU architecture is different from Llano and you will likely need new motherboard BIOS otherwise the motherboard will not recognize the Trinity APU.
The safe bet would to to upgrade to a mobile Llano APU instead of the current Trinity APU.