Check out the exhaustive specs. Looks like it's going to include everything from the already jam-packed 2002 release plus new stuff including some snippets of the infamous and still never-seen excised Eric Stoltz footage.
The release date is October 26th, which is likely a clue to when we'll get the episodes. Kind of hard to imagine that Telltale/Universal wouldn't try to roughly synchronize the launch of the new games with this.