Wargaming announces a new unified premium account system that will offer benefits across all their titles, saying this will provide simplified access, which makes sense, as well as more account security, citing enhanced security tools which don't seem to have anything to do with unifying the accounts. Here's word on the plan:

The Unified Premium Account, which grants bonuses such as an increased experience and credit accrual rate, will be applied across all of Wargaming's video game titles. Purchasing a premium account in World of Tanks will benefit in that account also being active for World of Warplanes, World of Warships, and any other future Wargaming title.

The Unified Premium Account will officially launch during one of the stages of World of Warplanes open beta, where players will receive special tokens for free that can be used to purchase a Unified Premium Account. These tokens will serve as the equivalent of in-game gold during the open beta testing phase. Wargaming's upcoming naval-combat MMO World of Warships will also feature the Unified Premium Account once that title goes into open beta.