Alright, here's my review.
This build is a HUGE improvement over any other previous one, in terms of Speed and Batter Life. I think it also resolves the Overheating issue. I was so exited once my device booted on to it, and I saw its Power.
But, as always with every build, the MS team fixes some bugs, and somehow they manage to **** up the previous working stuff. I noticed that once you install/hard reset this build, you'll see a Search app on the app list, just like on the PC. But, it disappears out of no where in like a minute...
Glance can't install on this build, but this is mentioned by Mr. Aul, and they are working on it.
And as most of you know, Truecaller was updated so you can use it with Windows 10 Mobile, but now, you can't select it in the Calls + Messaging section. You only get the options None, Calls + SMS Filter, or Block & Filter.
I also noticed that some of the messaging apps, like Messenger, and WhatsApp, if you pin them to Start, you can't resize them to Wide. Only Small or Medium. No matter what you do, they can't get resized to Wide. Plus, notifications don't show on the Tile. It's just like the device is not detecting them as Live-Tiles...