Based on the wiki's deep coverage of this, it looks like Aaron Donald's return is trending toward yes — but it's not official yet.
Here's the short version: Donald retired after 2024, but the Rams' blockbuster trade for Myles Garrett in June 2026 reignited his interest. Insider Jason La Canfora reported by July 8 that the comeback was "viewed as close to a done deal," and Donald was spotted working out at the Rams' facility on July 11.
However, Sean McVay said on July 23 that Donald is still "thinking about" it and "going through his process" (from the Aaron Donald page). Adam Schefter also reported it'll "be a while" before he decides. So while multiple insiders say the momentum is strong — and Donald is still under contract for $30 million — no formal announcement has come yet. If he does return, expect a rotational role (25-30 snaps/game), possibly joining midseason rather than Week 1.