I guess the interior will be the same or very similar to the one of the latest X1, i.e. the lounge type, instead of the car type.
As a matter of fact, my colleague here at the office just ordered a X2, the F39 one, which is scheduled to be delivered sometime in October. He wasn't interested in waiting for one as he didn't like the X1 interior at all and is also not a fan of the expected price increase. He got a well spec'ed sDrive18i M Sport for 39.300€, which in my book is quite a lot for a BMW that is not blue and RWD.