Yes, apparently the tasks for S11 were filmed pretty much the same time as those for S10. But the studio recordings for S11 are only happening now.
Jonny Vegas can often really take over and derail a program that he's on, so I was cautious. But his existential despair when his balloons floated away was gold.
In general, I thought the opening ep of S10 was...ok. It's of course amazing to have the show back, but I really felt the lack of audience energy -- especially during the study task -- even if there was one next door, or whatever. But usually the interactions between the comedians take a while to warm up anyway, so first episodes can often be a bit cautious and tentative.
This first ep did seem to suggest that this may be a...challenged bunch of contestants. Which can be fun; every few months you'll see a post on another board suggesting a Season of Returning Losers (as if they're the first to think of it), which to me (and to Alex, who has commented on the suggestion) always seems like a bad idea. It's fun to have a David Baddiel or Nish Kumar on every season, but an entire cast of them would weary me. We need a few people who actually do tasks well! Hopefully this cast will prove to be diverse in terms of their...shall we say levels of competence?