Source: War Thunder. Official channel.
We have named our update “Project-X” not only because of the upcoming release on the Xbox One. Among the interesting features of this update, there are many “X” related items: XM-1 (GM) and XM-1 (Chrysler), XM803, AMX-40 and Fritz-X guided bomb. In addition we have added new locations and missions, hugely reworked sounds for aircraft and added many other changes that made the game even better!
To read the patchnotes : https://wt.link/changelog179