Some said rumours, some claimed fake news but the truth is they are coming and Wargaming just announced them at Gamescom 2018. The first nation will be the French, getting a branch up to Tier X and are planned to be released early next year.
Wheeled vehicles were first tested in 2016 during the 100 years celebrations when the first tanks were ever used during the Great War. A feature a lot of players have been asking for years but Wargaming said it many times before, they were worried how these vehicles would affect gameplay and how to balance them.
Seems they might have sorted those problems and we now can rejoice with the introduction of a brand new branch. For the moment we can only see what I believe to be the Panhard EBR-12, a 90mm version of the World famous EBR, possible Tier X, but more details will be released soon.