You have basically two choices at this stage:
1) It's an android phone
2) A lot of people including named figures with track records such as Evan Blass and various others all releasing various consistent images and information independent of each other that is faked (or they are all working together in some elaborate con) . That's before you getting to the logistics of mocking up a slider-phone, loading android on it to make a hands on video....
There has no zero evidence of a) dual boat, b) a bb10 version or anything else but an android phone... none.
So yes it could be that there is no android slider phone but at this stage, the most parsimonious solution based on the information we have, all of google's previous history and what they will license is that... it is an android phone.