The biggest announcement at WWDC has mostly gone unnoticed and uncommented - WebGL support in the Safari browser on OSX and iOS. At last the big browsers all support 3D graphics and web apps and web games in particular are effectively universal.
Breaking news - WebGL will be supported on iOS!!
At 4D Pipeline we do a lot of webgl development as well as a lot of iOS OpenGL development. Previously WebGL was not able to be played on iOS but from iOS8 it finally will be!
With Internet Explorer now supporting it and iOS8 now supporting it - this removes the final roadblocks webgl has been facing.
Not only is it supported in the Safari browser but in WebView as well, which means that native apps that want to show HTML content can now show it including advanced graphics!
Note: Also worth noting the iOS Metal 3D announcement
This improves the native 3D api for the iOS A7 chip, thus iOS 8 native apps should be able to outperform webgl by ~5-10x