The latest and greatest version of World of Tanks came out. Grab it here. If you activate bonus code 2015WGNY you get a free day of premium. Make sure to login this week, as it will grant you a free premium German tier II tank, including tank slot.
You can download XVM for your stats here, and Gamers modpack (with DYI loader) or Aslains modpack to get convenient stats and additional features. If you need to buy stuff, (garage slots, equipment etc) this week is the time, all is on major discount ATM.