Microsoft finally took the covers-off the 2nd Technical Preview build of Windows 10 for Phone on 10th Apr. It’s a major improvement over the first build & comprises of new universal apps, new features & of-course new bugs. You can read about what’s new, what’s fixed & the bugs at below link.
Here’s taking you through the released build 10051 in screenshots
Start Screen, Action Center & App list
Settings & whole lot of settings
Alarms, World Clock, Timer & Stopwatch
Calculator (& Converter)
Microsoft Stock Camera (Lumia Camera 5.0 interface)
Inbuilt File Explorer