Ah, I misread the thread last night, I was half asleep at the time lol So Telltale stuff is an unofficial add on to the mod and not an actual part of the mod itself. I'm sorry to hear that production has stalled, this mod it still, imho the closest we'll ever get to playing a "movie accurate" BTTF game, the level of detailing on the DeLorean and it's effects still amaze me.
Unfortunately with fan projects such as this there will always be the "when will it come out?! We've been waiting forever!" crowd, if you've ever been to the AGD, IA, or POS boards you'll see it's just as bad over there! I hope this mod does reach completion one day, but even if it doesn't, what we have now is still a testament to what can be achieved when fans put their minds to it!