This quote fro Temeura seems to indicate we’ll at least see what he was up to between ROTJ and Mando, if we don’t go back even further.
I’m sure we’ll see Boba escaping the Sarlacc pit, which makes me wonder - which version of it are they going to use? The one which is basically a hole or the one with a beak? (Not that anyone on here needs the special edition changes explained to them)
Very likely that they will. The very episode he was confirmed in used Special Edition footage of the Death Star explosion with the Praxis rings.