westfw:
I think that people interested in experimenting with Teensy 3.0 should read the kickstarter page and "updates."
Paul has been posting a lot of high-content messages there, and they are readable even if you're not a "contributer."The main description says:
The USB port on Teensy 3.0 is capable of USB host mode. A Micro-AB connector allows future use of USB host mode.
(They also seem to be setting records for "shortness of timeframe" between kickstarter campaign and getting the product into people's hands. Woot! (alas, kickstarter apparently frowns on this sort of use of KS as an advertising/sales channel for products you were going to produce anyway.))
Well lets just not tell them.