During the Microsoft E3 2019 press conference, the company revealed their Xbox Elite Wireless Controller Series 2 in a new announce trailer. You can check out said trailer below:

According to the description: the Xbox Elite Wireless Controller Series 2 features over 30 new features including adjustable-tension thumbsticks, new interchangeable components, up to 40 hours of rechargeable battery life, and limitless customization with the Xbox Accessories app on Xbox One and Windows 10 PC.

As a side note, battery life varies significantly with additional accessories, usage, and other factors. But 40 hours is absolutely nothing to sneeze at, so even with slightly decreased performance it'll still be charged for a very long time.

The last time Xbox One received any news on design upgrades, it was through various patents revealed earlier this year. According to said patents, Microsoft was experimenting with some new feedback features for controller triggers. Most likely, the controller designs featured in those patents manifested in the current Elite Series 2 we see now.

Before then, Microsoft revealed designs for their Adaptive Controller in 2018. This controller is meant for those with limited mobility. Through a number of interchangeable pieces which can be attached to the controller, it can be adjusted to suit the specific needs of the player.

The flat based controller is designed to rest on top of a surface, as opposed to being held in the player’s hands. It features a D-pad on the left-hand side along with two large track-pads which makes the controller more accessible. It also comes in easy-to-open packaging to ensure that players with limited mobility do not have any issues while unboxing it.