Er... What? Black and White's aspect is completely different from the rest of the game series
Yes, there are some differences here, but there's nothing completely different. Visual differences aside, it's still pretty much a familiar package inside the cartridges. The absence of gyms does affect the typical discourse structure of the franchise's games to some extent, but there's still nothing too different there. Rather than gym battles, I assume you'll just face challenges from other people. The inclusion of an antagonistic team (Plasma) adds to the familiarity as well.
So while I do acknowledge there are changes to keep things interesting, nothing's completely different.