DLC is up now. The S2 rank-up festival (against Jupiter, too!) might be required, since I'm cutting it REALLY close on these EX Episode jobs with a level 38 Yukiho. It also seems that the new extends also prevent you from equipping any accessories. I still wonder if that's all we'll get, though...
Now for the Ultimate Appeals... they basically boost your skill boosts (the middle bars on each appeal) to max, which is like making your solo idol perform like a mid-high rank trio. The only catch is that you need to get your voltage maxed and then use another memory, like if you were doing a duo burst. The AI for this fourth job is incredibly annoying for me right now, and while it might be because I skipped the S2 rank-up, you can't actually use the Ultimate Appeal while the AI is bursting. So if you get max voltage while they're still bursting, you either counter or waste memories. I managed to pull a close victory regardless, but it's not fun to hit a wall like that.
As for the S2 rank-ups? It's Jupiter, and it's probably the most insane challenge so far. Their bursts take your memories... and I don't just mean they drain yours. They'll take, say, three of your memories and add it to theirs. I only noticed when they started off with 15 memories on the first song and ended up with 13 memories on the second song. Oh, and they also bring every appeal down to 100%. So yeah, good luck.
On another note, I had a loading screen with the President on it. Never seen that one before.