According to Hasbro, the parent company of Wizard's of the West, the group who owns license for all things Dungeons and Dragons, Baldur's Gate III is just the beginning.
DSOG (Darkside of Gaming) reported just a few days ago that Hasbro made the announcement at an investors event in New York that they intend to release 7 new D&D games starting with Baldur's Gate III, Dark Alliance and then 1 game a year through 2025!
This is exciting news indeed. Here is the source article:
Darkside of Gaming D&D NewsTM