No manufacturer/brand wars allowed/intended here as the proper anticipation from me is that IOS 8 and Android 5.0 have the phone encryption enabled by default. For Android, there are already those encryption systems that can be optionally turned on by the users but so far, it looks like we don't know how to enable those and my Android and IOS devices are really old and buying a new one just for improved security, future technology like UHD photography/videography and of course, newer games to play is not an easy feat for me in the future as those devices are really expensive.
The HTC One M7 and M8 and its mini variants will get this version once it is out and especially for the entire series of Xperia devices by Sony whether it's a phone, tablet, etc. The last thing will be Google Nexus 4, 5, 7 and above that will also get the upgrade as well. There are also the Motorola mobile devices running Android but what's the point of making them count in the list in our thinking cap since Motorola is like acquired by some company by then? And NVIDIA Android game consoles? Who's gonna play those?
This announcement from Google is going to excite the Android users the most when it comes to Android 5.0 so it's not the same for various Nexus devices they have announced as well.