Paragon Boards
How to reset skill points and respec talents in Diablo 4
Talent builds did not exist in the days of the original Diablo; you were a Warrior, Rogue, or Sorceror, and had little gameplay customization beyond that.
The Diablo 4 Paragon Board expands end-game progression with endless potential
Though it's still in development, the Paragon system in Diablo 4 will add a new way to approach character customization to the game with the Paragon Board. It builds on Diablo 3's Paragon system, where you start earning Paragon points at max level which you can spend to get a fixed bonus to certain abilities, giving you a way to keep progressing.