The World of Tanks Birthday Hangar will be released again this year in the RU Server, with some modifications to celebrate the five-year anniversary of World of Tanks. Not yet confirmed for the EU, NA and SEA Servers, but I would bet they will get it also.
Same as last year, a multi-level hangar with the main Wargaming achievements in the last year, and the turning points in World of Tanks. For example the removal of the WT-E100, the lunar mod, etc.
Right in the centre of the hangar there is a digital hologram of the Earth, wich emphasizes that the World of Tanks fans are from all over the World.