Based on additional photos in the Discord chat (see the ‘Spoilers’ channel), I estimated there to be roughly 20 ‘pods’ — four to the left behind George, 11 or 12 in the middle and four to the right (the latter for symmetry’s sake, though I’ve seen no pictures of the right side to confirm this).
Each pod pictured shows seating for 2-4 people. If we take the (presumed) average of three people per pod, multiplied by 20 pods, that’s ~60 people, give or take maybe 5-10. Given the circumstances and especially compared to last season, you’ll hear absolutely no complaints from me! Gotta love those odds of being called down, too — assuming no participants are given a guaranteed shot at being a contestant with fresh audiences each taping.
My theory is each pod of 2-4 people will consist of either family members or friends. The variations in pod sizes make no sense if people are randomly grouped together, plus it runs counter to the point of distancing, which the show is obviously still promoting, albeit a bit more relaxed than last season. If we’re pairing complete strangers together, we might as well have a normal audience but masked. Friends/family is a safer bet.
Edit: I just noticed the second photo posted here does show the right side, only flipped as a selfie. Looks like my theory of four pods on the right may be confirmed.