I realize the desire to keep this a secret so to keep up the excitement and anticipation, but the issue with that is simply this is likely going to cause a server wipe for most players. These players and the server admin/owners are anxious about this wipe. So keeping the 'release date' a secret is like saying 'we are going to erase ALL YOUR GAME PLAY some day but we wont tell you win. Oh and the release is teased on an experimental server so have fun'. Please consider this and reconsider your 'keeping it a secret till the very last possible moment' plan. Even just a 'we plan to release this date if there are no new bugs to fix' or 'we are aiming to release it around this time' would be helpful.
Next, as some one who plays both console and pc version, I do hope this update will resolve some of the console issues such as synchronization with server, the jamming/stuck magazine bug, the bug with not being able to load a magazine in a weapon despite the weapon showing as empty of mag. Melee issues where models (zombie and player) end up going through each other while in melee combat. Also issues where items in vehicles or tents disappear from the inventory. These are irritating bugs on the console version, especially for a game that I had to pay for, a game that is suppose to be finished and complete, but clearly is not. I apologize if this offends any one.