Amongst the usual skew of Edge updates (MS really do seem to be trying to teach Edge everything, including how to hold the pre-used utensils in the food preperation room (i.e how to be the kitchen sink)), there's one, very notable, very oft asked for, actually incredibly worth mentioning update in this build - No more logging out to change screen resolution!!!! Here's what MS says about it:
"No more logging out to fix blurry desktop apps: Hey, do you hate having to log out and back in to Windows to fix blurry desktop apps after docking, undocking, or remoting? We do too! In this flight, you only have to relaunch these apps in order to have them render crisply. If you have a high DPI display (a 4K display or other high dots-per-inch (DPI) display, such as Surface displays) and change the display scaling value in any way (this can happen when you dock/undock, remote from a device with a high DPI display, or otherwise change the display scaling setting) most desktop apps become blurry. This is due to 1) the apps don’t respond to a DPI change notification, because they haven’t been updated and 2) Windows keeps the display scaling/DPI data that it reports to apps constant until you log out and back in.
In this flight we’ve changed the way that Windows provides DPI-related information to these applications such that each time one of these applications starts, they’ll get updated data from Windows. This means that for these applications, you simply re-launch them in order for them to render correctly if they’re blurry. While this isn’t what we all want: having these applications render crisply all the time, we feel that it’s a lot less painful to relaunch apps instead of having to close out of all apps and going through a log-out/log-in cycles."
They've also buggered about with the notification and action bar some more; recently email notifications (for example) have gone from small and unobtrusive, to taking up half the bloody screen* . Other changes include more work on the re-introduction of semi-transparency in Windows (um, wasn't this in Win7? - why, yes it was), and a bunch more gaming mode and touch keyboard enhancements.
*small exageration, maybe