So as was stated above by someone else, as the EU team stated, currently all our development resources are aimed at other projects throughout World of Warships and though we do divert some of that to correct issues or bugs with current operations it has been stated time and time again over the past year (actually longer than a year) that we have no current plans to release any new operations and as of right now any operations that were previously released and removed probably will not return.
At the end of the day, the development team has a vision and goal for World of Warships and the focus is on that.
Contrary to what some may think and or say, I have put a lot of work into gathering the feedback that you all have sent me since I started working for WG and a lot of changes have been made to Coop, I have tried to ensure that the PvE community overall is included more in new missions, campaigns and/or combat groups. Case in point the "Do this" OR "that" component to missions is directly from feedback the PvE community provided.
As in ANY game, developers and publishers are going to focus their efforts and energy on where the majority of community focus' their energy and time and globally PvP is where most players reside.
I would love to see more operations in the game, I enjoy playing them with friends, but the last word was, at this time, no further development is going to be focused on them.
-Hapa