Excellent. I had installed the Nexus 5 Google Now Launcher APK that got spread around when Kit Kat first came out, but it's been a bit buggy on my Nexus 4 and 2012 Nexus 7. Very nice to see that it is now officially out.
+Matej Cibic thanks, and yep se need home.apk from N5 to make google laucher work. Ron you shoul update you post: Home.apk is needed for work on non N5 devices. Lets ser wen google release the laucher full with all working apk for everyone use.