Here is the currently-known delivery plan for Futaba FASST systems:
http://www.rcuniverse.com/forum/m_6016025/tm.htm
The Futaba modules are for Futaba transmitters only.
The TM-7 FASST transmitter module is for the 7U, 8U, 9C, and 9Z series transmitters. The R607FS receiver will work with the TM-7 transmitter module and has dimensions of 1.6" x 1.1" x 0.35", same as the current R606FS receiver.
The 7C FASST transmitter does not use a module, and is compatible with the R606FS receiver that currently comes with the 6EX FASST transmitter.