Amazon Germany has potentially leaked a new Fallout collection called Fallout Legacy Collection. The listing appeared on Amazon a few days ago, and has yet to be removed, though such a collection hasn't been announced by Bethesda. According to the listing, Fallout Legacy Collection contains Fallout, Fallout 2, Fallout Tactics, Fallout 3: Game of the Year Edition, Fallout: New Vegas Ultimate Edition, and Fallout 4: Game of the Year Edition in one package, with the price likely being around $40. Apparently, the collection will launch on October 25.
The listing only makes mention of a PC version of Fallout Legacy Collection, so those hoping to see classic Fallout games make their way to consoles may be out of luck. Bethesda itself has yet to announce the collection, so it's possible that the PC version doesn't even come to fruition, or that it is exclusive to Germany. In any case, if Fallout Legacy Collection is set to release on October 25 as the leaked Amazon listing claims, then an announcement should come sooner rather than later.
If Bethesda was planning to bring all of the Fallout series to consoles as well as PC, it seems likely that it would have made such an announcement during its E3 2019 press conference. Instead Bethesda's E3 2019 press conference focused on new content coming to Fallout 76, and it didn't make much mention of any classic Fallout games.
Interestingly enough, Fallout 76 is seemingly the only Fallout game not included in the Fallout Legacy Collection. One could say that's because it's not part of the main series, but Fallout Tactics isn't a main series Fallout game either, and it's part of the lineup. Maybe Bethesda opted to keep Fallout 76 out of the collection due to the poor critical reception of that game, but an actual reason hasn't been given at this time.
If anything, it seems like it would be to Bethesda's advantage to bundle Fallout 76 in the Fallout Legacy Collection. That way it could maybe convince some Fallout fans who haven't tried Fallout 76 to check the game out, which could in turn increase its active player base. Whatever the case may be, we may learn more about Bethesda's decision to leave Fallout 76 out of the Fallout Legacy Collection once it's actually announced.
Fallout Legacy Collection is rumored to be in development for PC.