Unlock Operation Nitro Winter

I have already completed all stages of Castle Ivy, but Nitro Winter is still locked, and also I can't access new certifications either. Any help with this?

 

It is currently not released. So we will have to wait for further updates.

 

Is there a release date set for the further updates?

 

Nitrowinter is gonna be released somewhere in november, i think ive heard a date somewhere, but i forgot when

 

When is this mission due to be released?

 

new academy missions are scheduled for nov 23rd, and next mission set is expected soon after that (not sure if its nitro winter, or dark sentinal)