From what I see in a few photos, the BB10 UI will be an enhanced version of the Playbook UI. So, as you say, a regular base is established. Maybe, if the price is right, a few more people will get interested. So many people bought the Playbook when they dropped price by 60% , so obviously, people will go for BB, if the price is right, However, I feel they are going to start by pricing their higher models at 40k and mid range at 25k, and hence loose out.