Mercurius
Legend
I started a poll and thread on this topic earlier in the year and the consensus was something akin to 5.1 to 5.2 is most likely: revised core rulebooks with new art, and maybe a few added bells and whistles. With the game's popularity, I'm sticking with that.
That said, with the various controversies and WotC's proclivity to bend to a certain vocal minority (or concerns with inclusion, depending upon how you look at it), I think it is more likely that we see heavily revised books. It will be called the "anniversary revision" or some such, but not 5.x or 6E.
Less likely but still possible is some kind of Greyhawk box set, and/or some sort of commemorative product. They already did Art & Arcana, but maybe they can do something else more game oriented that still celebrates the history of D&D, like: 50 Years of Dungeons & Dragons Worlds.
That said, with the various controversies and WotC's proclivity to bend to a certain vocal minority (or concerns with inclusion, depending upon how you look at it), I think it is more likely that we see heavily revised books. It will be called the "anniversary revision" or some such, but not 5.x or 6E.
Less likely but still possible is some kind of Greyhawk box set, and/or some sort of commemorative product. They already did Art & Arcana, but maybe they can do something else more game oriented that still celebrates the history of D&D, like: 50 Years of Dungeons & Dragons Worlds.