Oh, it'll stay Dungeons & Dragons...
Except now, "dungeon" will refer only to an underground environment whose walls are constructed of gray stone. After all, gray stone walls have always been at the heart of the dungeon experience. Less thematic building materials will instead be incorporated into their own unique environments in some unspecified future product or products.
And "dragons" will be reclassified to make the differences between chromatic and metallic dragons more distinct. All fire-breathing dragons will now be chromatic dragons, while all other dragons will be metallic dragons. That way, if you want an engine of fiery destruction, you use a chromatic dragon; if you want a more subtle breath weapon, you use a metallic dragon.
Also, the appearance of the core rulebooks will be changed. No longer will they be relegated to the boring, traditional role of non-combatant reference books. Now, they will take the form of monstrous trees and gain powers that work well with those of treants. But they will be able to change shape to assume their traditional guise, should you have an attachment to rulebooks actually being books with rules.
Also, Dungeons & Dragons products will no longer be sold in gaming stores or on the Internet. In future editions, all local gaming stores will be combined into a single entity called the Shipping Tempest. Meanwhile, the Internet distribution channels will be renamed the Astral Net, and all domain names used for websites thereon will be demoted to subdomain status.