Funny how something that 5 years ago would have caused a stir - i mean a new platform, new API, new OS, Java, c++, HTML5 etc. etc. - is kinda pathetic today. I think the world's reaction is: what, a new platform? Who ordered that?
I have had the SDK for the PlayBook 2.0 (QNX) for over 6 months, so this isn't exactly new. BB10 is the port more or less of QNX to the phone devices.
I have to say that I am impressed with the new stuff for the phone. Example here: