Warner seems to be committed to producing at least two sets of TTA. The staff are being interviewed currently for the first two sets in one go.
The first set's extras will cover the development of the series and characters. The second set's will focus on the creative team.
I don't know who will be interviewed for the set but I'm willing to bet we'll hear from Tom Ruegger (producer), Paul Dini (writer). Bruce Timm was a storyboard artist on the show so he might pop up somewhere. Hopefully we'll hear from the staff directors who included Art Leonardi, Rich Arons and Eddie Fitzgerald among others.
Since Animaniacs volume 4 is currently on hold I'm a little pessimistic that we'll get to the final episodes of TTA, which are my favorites, but one can hope. There's also the question of what to do with the specials -- the very good "Night Ghoulery" and the not-very-good "Spring Break Special" -- and the direct-to-video movie How I Spent My Vacation, which was one of the best things TTA ever did (in its interweaving of many different, seemingly unconnected plots, it was like a wacky cartoon version of Nashville and anticipated the style Simpsons episode "22 Short Films About Springfield" by several years). I guess we'll see.
The early Tiny Toons episodes -- the first 65 that ran in syndication -- are interesting because you can see different styles of writing and cartooning butt up against each other as the show, and the newly-formed WB TV animation department, tries to find a style. There are episodes that are influenced by classic cartoon comedy, others that are more in the mold of '80s Saturday morning cartoons, others that are more like Duck Tales, and these styles sometimes co-exist in the same episode. The episode "Hare-Raising Night," where the characters meet a mad scientist and a Gossamer-like creatre named Melvin, has elements of "Hair-Raising Hare" (the title, the mad scientist gags, the fourth wall breaking) mashed together with straightforward adventure storytelling and a bit of the socially-conscious messaging that '80s cartoons all had to have (the characters are trying to stop the mad scientist's experiments on animals).
Even if you're not that into the '90s Warner TV cartoons, it'll be interesting to watch as a snapshot of an important time in animation history, when TV cartoons, which had been getting progressively worse for decades, suddenly had the opportunity to get good again and were finding their way by trial and error.
Oh, and from the TAG blog, here's Bruce Timm's 1990 caricature of some of the WB artists, including his director, Art Vitello, and animation veteran Norm McCabe.