The system prompt now includes updated model family information: "The most recent Claude model family is Claude 4.5" with model IDs for Opus 4.5, Sonnet 4.5, and Haiku 4.5.
Evidence
Model info in system prompt (search for "The most recent Claude model family is Claude 4.5")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
