Claude 3.5 Sonnet (New) is the variant of Claude 3.5 Sonnet released on 2024-10-22. Its personality is slightly different from its predecessor's and it is generally somewhat more capable. Among other things, it appears to engage in somewhat more naturalistic interactions and follow-up questions. Unlike competitors, Claude is well-liked enough that many users would declare holy war against Claude's enemies if asked to.
It's already far too late.