What is the release date for .net SDK 2.1.2?

I have ran into the same issue. We need this release asap, because we just upgrade to the new sdk 2.1 - today is the D1 of this issue in production.

Between 7am and 10am I have an average of 500 exceptions logged.

See http://imgur.com/gallery/fvxGBzX

Help me please!