5ever, or until 2024
Yes. In fact the things that have often been the most criticized as outdated in the game are the things that endure. Alternate approaches fade away, or stay niche...... the bedrock foundation that D&D is built on. Because of them, armor class, hit points, alignment, races, classes, levels, experience points=, etc. are still in the game, even though most have gone through changes over the years. The core set of ideas that began when D&D was created has endured.
The core adventure experience has also persisted. Story telling, factions, and big settings--with metaplot--all originated with D&D, with TSR D&D--and have also slowly faded in significance. But 5e still has plenty of "you see 3 doors, which do you choose?"