Os dejo una build para el nexus 5 con estos cambios, sacada de la comunidad de Google + de omnirom. En cuanto llegue a casa la probaré y comento a ver que tal va.
** Nexus 5 (hammerhead) HOMEBUILD **
- Lockscreen Notifications
- Floating window with multitasking
- notification drawer: custom clock & calendar shortcut
- Add option to open notification in floating window
- App Circle sidebar (add support floating window)
- Active Display add shake event
- DownloadManager: add support pause/resume/stop notifications
- change UserTile view
-*Quiet Hours Automatic Switch
- Command line tools: tcpdump, netcat, openssl, ssh, sftp, scp
DOWNLOAD:*
http://goo.gl/3F9OEM