JEB
Legend
1. Wizards hasn't released anything new for 5e on DM Guild for a while now; all their most recent digital products are exclusive to D&D Beyond users.Hasn't WotC released PDF's of every past edition up to this point? Why is the assumption that they won't release PDF's of the 2014 core in the future?
2. Several 5e products that have already gone out of print are nowhere to be seen on DM Guild (such as the 2014 Starter Set, the original Tyranny of Dragons adventures, Volo's Guide to Monsters, and Mordenkainen's Tome of Foes).
3. One "Legacy Content" product, the Elemental Evil Player's Companion, no longer appears in searches on DM Guild. (It can be found with a direct link, and it does still appear on DriveThruRPG searches.) This change was made silently, but pretty much has to be intentional.
I certainly hope that they'll release PDFs of the 5e core rulebooks on DM Guild, but the above suggest it's unlikely. At least not for quite a while.