Microsoft has announced that you'll soon be able to run multiple instances of UWP apps in Windows 10 with the launch of version 1803. However, the feature is limited to desktop and IoT projects.
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Microsoft has announced version 1.3 of UWP Community Toolkit, claiming it to be the "largest update" since launch. It is used by developers to simplify UWP app development, among other things.
Adobe has announced that it will release its first UWP app for Windows 10 by the end of 2016. The Adobe XD design app will take full advantage of the touch- and pen-based capabilities of Windows 10.
The first Universal Windows 10 app showed up on the Xbox One earlier this month, but a few more have now made an appearance for those running the latest version of the preview OS.