Google Nexus 5 — A few screenies from Android 5.0L

This is just the preview version of Android 5.0L converted to a flashable zip by some nice dev at xda here. The overall experience is quite good and the notification setup becomes intuitive pretty quickly. Overall seems a bit smoother and snappier than 4.4.4, not bad for a preview version, so once a release version has been... released it should be noticably faster with better battery life. There is root available, but as i write this there's no compatible busybox so not many root apps will work. All instructions are in the thread if you want to try it....

Update- Busybox X has been updated to work with android 5.0. Some root apps will now work, but others will still need to be updated by the developer to work with this version.

— modified on Jun 27, 2014, 11:10:19 PM

At the moment it's only for Nexus devices. The thread I have linked to is for the Nexus 5 though there will more than likely be similar works for the Nexus 4/7 on other threads. For non-Nexus devices you'll need to wait for either a custom rom (cyanogenmod, aopk etc) to release it or a dev on xda/modaco to port it, which could be anything from a few days to a few weeks. Or you could wait for Google to release it generally, your manufacturer to incorporate their own bloatware, then your carrier to approve everything; this could take at least a good few months...
If you're running the G Pro 2 then because it's a relatively new phone there may not be many devs/custom roms yet (normally cyanogenmod only develops roms for phones after being contacted by a number of owners) then you my have to wait a while.

Sony have said they will update the Xperia tablet Z to android 5.x in early 2015.