Looks like WoWp release will be postponed (146% sure acording to serb). Surce: RU Q&A
There seems to be issues with WoT integration, a.k.a. account unification; and some other issues with the game itself.
In other news, there have been some problems discovered after release of 0.5.3 update on the RU server that put the patch deployment on EU and US servers on hold, until further notice.
There are people complaining (on RU) about having black screens when battle starts and many others (quite possibly all) report missing options in settings menu.
The WoWp web portal has the news: http://worldofwarplanes.eu/en/news/2/new-release-date/
Vlad Belozerov, World of Warplanes Director of Global Operations:
We are committed to releasing a great title and are doing everything to ensure that World of Warplanes gets the final polish that we believe the game needsThe extra time will allow the development team to apply some last fine-tuning to the game’s balance and make sure that every feature is top-notch before launching the project.The new release date is set to November 13th