InfoSync has the scoop:

Clips on the bottom, out in just a few days.

From InfoSync
The price has yet to be determined, but the plug will become available in the next few days, according to the website. Unfortunately, there's no mentioning of whether the PEGA-BT700 will become available outside Japan, but in not doing so, Sony would make one of its most foolish moves ever.

Also worthy of mentioning is the fact that Sony is planning a Memory Stick Bluetooth module that will be compatible when the CLIE when it's released, but it is not known when this module will be released. So, if you'd like Bluetooth for your CLIE now, the PEGA-BT700 should be just the thing for you.