Spoilers for Chuck season 3 not yet confirmed for a specific episode or which span several episodes are posted here.
- Brandon Routh will guest star in at least 6 episodes as Chuck’s mentor and an expert on The Ring.
- Lester will undergo some sort of temporary change. (source)
- The Buy More is still around, as is Tony Hale’s Emmett Milbarge. The Orange Orange and the Castle are also still in use at the beginning of the season. (source)
- Chuck and Morgan are roommates, at least at the beginning of season 3. (source)
- We will learn more about what Sarah and Casey have done in their respective pasts as spies. (source)
