Before the show, we chatted with Android VP of Engineering Dave Burke.
Burke clarified that the Android team took a bit more than just "inspiration" from Chrome OS, though, "We're actually using the same code, in some places, and bringing that to mobile."
This can take anywhere from a few minutes to a half hour—Samsung actually quotes "25 minutes" in their update UI.
Previous versions of Android N also added a new compiler that can do JIT Just In Time or AOT Ahead of time compiling, which allows it to skip the "optimizing apps" dialog after an update and compile the apps later.
SquashFS is designed for an embedded system where space is at a premium, so it should help cut down on some of the storage use.
We just wish more devices actually had the first world problem of having to wait for an update to apply.