What kind of provisioning profile is necessary for TestFlight to be used with 1000 users, as mentioned in their faq?
It seems ad hoc only allows up to 100 devices per year?
Quote from their website:
Team member Limit? You can have a team of 1 or a team of 1000 with TestFlight. If you are distributing Ad Hoc signed IPAs please be aware that, according to Apple, you are only allowed 100 devices attached to a developer's account.
So I suppose that you can have a team of 1000 users, but only up to 100 devices can be used. At least that's what I understood.
Hope it helps