so when will the fix be out, and when will the diff be in check with hash
Two things:
First, "fix" isn't the right word. It isn't broken, it's just outdated.
Second,
Troll is working on the Difficulty problem caused by the big Multipools, this fix should prerelease tomorrow. This prerelease will adapt DifficultyShield. The final release shield will be in v. 1.1