Wargaming is also prepping the new wintry Tundra battle arena for the 8.8 patch. No release date has been announced just yet.
[Source: Wargaming.net press release]
[Update: Wargaming has let us know about more goodies incoming for German player, including "the transformation of the VK3001H heavy tank to Tier 5, where it will undergo rebalancing and become a heavy tank, just as the VK3601H. Tank fans will also find that the new battle arena, Tundra, falls under the Autumn season marking the transition to the cold and wintery season approaching."]