Yeah, there have always been these types of unofficial and unauthorized interview/opinion/review releases...I remember in the 90s there was a line of VHS tapes that usually had the title, "[band] The Interview Sessions", or "[band] The Unauthorized Documentary", and as the music buyer at the store I was at, I had to be wary that it wasn't total crapola. I usually never stocked them, unless a customer special ordered them.
I *do* recall one of these being rather good, and that was a tape called "U2 The Interview Sessions". I recall that the tape had some rather rare interviews, one from *very* early in their career, being interviewed at an American college (on a lawn). Another interview was taken from U.K. (maybe Ireland) television circa 1988 (I think). I remember Adam Clayton sitting with (and drinking) a pint of Guinness while being interviewed. There was no musical performances, of course, but if you were a U2 fan I'm sure it was great to have.
So you never know what may be on these new DVDs. It's worth keeping an eye on it, maybe a rare early interview may appear...