I went into the belly of my beast to give the new run-time a whirl and I couldn't find it. I'm on a non-rooted nexus7 with the sideloaded 4.4 and I received the small update OTA. I scoured the internet for some screen caps of the process and where the option to turn it on and where the option should be, it isn't. Is ART disabled in the 2012 N7 or am I missing something?