Yeah, I think reissued and updated current ruleset (PHB, MM, & likely DMG) with new art for the 2024 anniversary is probably likeliest, but that they won't call it 6e or 5.5e, and it'll be fully backwards compatible with 5e material, especially the adventures.
The 5e PHB could really do with a do-over considering how hard it is to find stuff - no page bleeds, terrible index, unintuitive layout & ordering. But the actual gameplay is good & very popular. The 5e MM lacks encounter tables (they are in XGTE), lacks listings by CR (they are in DMG), lacks NPC racial adjustments (they are in DMG), and monsters vary wildly within the same CR listing. The 5e DMG does not have big problems, but XGTE generally has better stuff on eg downtime activities. Also I think the DMG should begin with 'running your first adventure' not 'creating the world'!