Mistral added actual sysprompt support with the sysprompt in the beginning of the text completion to the newest Large.

https://huggingface.co/mistralai/Mistral-Large-Instruct-2411

Extremely grim if this is in any way related to the previous rentry, "worst of all timelines" type beat. God I hope their actual business clients were complaining and they didn't change their text completion for AI coomers.