How do you get the background images to stay sharp? I have 1080p images that I try to set as my background on my 930 but they turn out blurry every time.
[edited for an error about proportions!]
Don't put them in cut to your native resolution. The OS is reintroducing parallax scrolling, which means your wallpapers need to fill a gutter partway off the bottom of the screen into which the view can move. If the phone is given a 1080p wallpaper, it will stretch it to a large size to fill all this space, making a blurry image. The screen will also use the rightwards space to scroll a little to the right when entering the app list menu.
So, your wallpaper must be 1297 (width) x 2300 (height).
Example image: here's another Tomer Hanuka image I was trying out.
http://i.imgur.com/jkYUcjb.jpg