Adobe says the tech at work in Lightroom mobile is the same quality as what you'd encounter when using Adobe Camera Raw and Lightroom on the desktop. HDR photography has certainly come along way from the days of manually editing together a few photos taken at different exposures to produced the desired effect. The company isn't the first to offer an HDR tool on a mobile device, but it does offer the convenience of being able to sync those RAW snapshots across devices if you're a Creative Cloud subscriber.
Unfortunately, there are some device restrictions on the new RAW HDR capture tool. On iOS, you'll need to have an iPhone 7/7 Plus, iPhone 6s/6S Plus, iPhone SE or iPad Pro 9.7. Those are the Apple mobile devices capable of capturing DNG photos. For Android users, the update only supports Samsung Galaxy S7/S7 Edge, Google Pixel and Pixel XL. Adobe says the reason for this is that it needed to ensure stability and high quality output from those algorithms. Galaxy S7/S7 Edge and Pixel handsets have the processing power under the hood to make that happen. The company is working on adding more devices to the fold "as soon as possible."
In terms of other updates to Lightroom mobile, iOS users can now export original files imported through Lightroom mobile and Lightroom on the web. Yes, that includes those DNG RAW images. You can also now use swipe gestures to rate and review photos and there's a new Notification Center widget that offers quick access to in-app camera. On Android, Lightroom mobile's linear and radial selection tools that debuted on the iOS version last year are now available.