Apple has been rolling out one update after the other lately. After releasing the iOS 11.1.2 update just last week, the company has already started rolling out the beta version of the iOS 11.2 upgrade. Which mean, iOS 11.2 is being tested, and can be expected to be out soon.
In the update, as reported by MacRumors, Apple is rolling out faster wireless charging support for the iPhone X and iPhone 8. The report confirms that 7.5W charging is available in the latest iOS 11.2 beta. As of now, the iPhone X and iPhone 8 support the slowest Qi charging speed of 5W.
However, in line with the iOS 11.2 beta update, Apple had promised at the time of launch that the faster 7.5W speed would be coming later on. It was earlier believed that the update for faster wireless charging will come with Apple’s own AirPower mat, which is said to came out sometime in 2018, but basis today’s report, that isn’t true. 
Also, the 7.5W speed seems to be available for any Qi charger that supports the higher output, and not just on Apple’s two approved pads from Belkin and Mophie. While there is no official word from Apple as to when can we expect a full public release of iOS 11.2, but considering the beta is out now, we can expect it to be out sometime in the next few weeks. 
The news of beta release comes barely a week after the iOS 11.1.2 update, which primarily brought fixes for the iPhone X. The most important patch that the update did was to the awkward issue of the iPhone X turning unresponsive in cold weather. The other patch in the update fixed the issue that could cause distortion in Live Photos and videos captured with iPhone X.