It should definitely at least have a bundle, but I wonder if it's just a bit too expensive to always include considering at least some will be providing their own typecover (at least between 1 -> 2 and I assume 3 -> will use the same type cover). All gen 1 and 3s should have been sold with a type cover though. Then again, if you try to sell your old SP3 it sucks to sell it without a cover.
Tablet mode is nice in theory but honestly aside from web browsing there's basically nothing "tablet" I want to do on the Surface Pro 3 since I can do...well, real things on it. I just wish Chrome weren't so goddamn garbage for touch/tablet mode.
I think it's a big mistake not to include a keyboard. While I readily understand that some folks might come to the party with a keyboard from a prior version, I would say - so what? They can still use the old keyboard with the old surface pro, or sell it when they sell their old surface pro. I feel pretty confident that MS will start including a keyboard going forward with the SP4. It makes the whole product so much more attractive to prospective buyers.