There is no BB10 dev or any other form (save the unreleased internal corporate version) for the PlayBook nor will there be given the state of the company.
A couple of people have attempted to shoehorn a phone version of BB10 on the PlayBook with very limited results.
I actually found that "remote control" silly for a 7" screen not to mention that it is probably the most expensive remote control...
But once you connected your PlayBook to a 42" HDTV (LED) and sit relax in your favorite sofa, drinking your favorite beverage and surfing the web using your Z10 as remote control, it is somehow an awesome experience...
The next thing you will wish is that your PlayBook is running BB10 and having Z30 specs for speedy execution...