KitKat "new" Launcher - non English (US) language
Well... it seems the best features (at least for me) will be exclusive to the Nexus 5:

http://www.droid-life.com/2013/11/22/psa-what-some-device-owners-wont-see-in-their-kit-kat-update/

From that list:


Google Experience Launcher
Translucent Nav Bar and Notification Bar
Smart Dialer


That's really a shame!