I'm guessing episode 10 will be similar to 7 or 8 with the only difference being that these freeroams will be much bigger. Imagine an 8 episode with three freeroams like a dorm party. We don't really know much about episode 10. To summarize:
1) There will definitely be a Thanksgiving freeroam and it will be outdoors
2) There will be a time skip.
3) There will be final freeroam in a brand new environment. It will either be a freeroam at Neil's house or the rock band concert that Zoey called MC to in ep9.
4) There will be a big focus on branching
5) Canonical scenes that combine scenes with different LI's will probably be few. The game will be more LI-centric.
6) There will be new minigames( updated brawler, chemistry minigame, beer pong).
To summarize, ep10 will probably be the most extensive and content-filled episode. It will have the most renders and animations, and according to DPC the episode will be a big deal even for solo players. This means that branching will essentially become an integral part of the story.
DPC seemed to be talking about one big free roam that would be a Thanksgiving party and a few smaller ones. Judging by his words, I counted 4-5 free roams, which is no different from previous standard episodes, only in Ep. 10 will be a little bigger. Episode 5: Preps party, short after party at Bella's house before bed, in the morning at Bella's house another bigger one. (Total count: 3)
Episode 6: Free roam in the DIKs mansion, in the library, in the DIKs mansion again, MacAllen's bar (total count: 4)
Episode 7: Free roam in your room, in your room again, big HOTs party, at the DIKs mansion (Total count: 4)
Episode 8: Free roam in your room, room again, big Dorm party, DIK mansion (Total count: 4)
As we can see, the number of free roams doesn't change much, but they have become larger due to the growth of the game size in Ep.7. I'm sure that in Ep.10 it will be the same and Ep.9 was an exception, which is suitable as a one-time experiment. The scheme from Ep.7-8 is optimal for me, we get a plot and a party to relax.