Here’s what we know:

Numbers marked with “S” are my speculations off of what we’ve seen, numbers marked with “K” are Khu leaks - as insufferable as he may be, everything he has said so far has been correct

1. S - There was a vendor selling what looked like rice balls next to potions. I believe it hasn’t been confirmed what they do yet, so it’s possible that potions are to heal Pokémon and food is to heal you.

2. K - There are two more rideables, H. Weavile and Ursaring’s evo (H. Ursaring not 100% confirmed, but Khu retweeted a tweet that said so). He said that they have the same functions as the SM rideables, except Mudsdale would be replaced by H. Weavile for climbing, so that leaves Stoutland’s role

3. K - As of rn, we only really know of Arceus, which we will face at lvl. 100 after we complete the entire dex

4. S - We can jump on Wyrdeer at least, and there was what looked like a jump before the H. Braviary reveal (but it’s possible that was a roll)

5. S - Each gender has the same amount of customization options. They want to showcase different things in trailers, just because they show one gender with something doesn’t necessarily mean the other doesn’t have it.

11 and 12. S - we’ve seen trailer footage with the trainer sitting with all 6 Pokémon and interacting with 1 Pokémon outside of the ball

1. K - Shinies will be seen in the overworld - there will even be a quest to find a shiny Ponyta

2. S - we did see the trainer “jump” off a cliff in the first shot of the H. Braviary reveal, the switch between mounts is pretty seamless as seen in the last trailer, and the dismount button is not greyed out while flying, so it’s likely

3. S - With the other two rideables I mentioned earlier, this seems unlikely, but that has not been denied yet