Two Windows 10 Mobile native apps Camera & Outlook Mail have received updates. The camera update brings new icon for switching between front and rear camera and the icon does look more functional in terms of expressing its use. There are  no other visible update

Coming to Outlook Mail & Calendar app, as you can see in below screenshots, if you use a device with on-screen buttons, the app now renders completely when you hide the buttons. The screenshot from previous version is on the left. Earlier it use to leave a White space at the bottom.

Outlook mail updateOutlook Mail link

Camera link