The latest trailer for World of Tanks: Xbox 360 Edition includes a look at some of the features and additions that arrived in Update 1.1 for the game.

This includes a look at the new Crew System, the new Himmelsdorf map, and the new British tanks. Though mainly the above video focuses on the new Crew System.
The first content update for the free-to-play action game brings about the highly anticipated Crew System, new Himmelsdorf map, and five additional British medium tanks.

Crews are essential to success in tank warfare. Represented by the primary Tank Commander, a partially or fully trained crew is necessary to operate every tank in battle. By earning Crew experience points (XP), players can level up their Tank Commander and crew, and gain additional abilities and perks that increase their performance in combat.

The labyrinth of streets and squares in the new battle arena, Himmelsdorf, creates an ideal scenario for players to try each of the British medium tanks—Cromwell, Comet, Centurion I, Centurion 7/1, FV4202.

You can find out more about Update 1.1 by checking out the full 1.1 patch notes.