The XDA developers team member theos0o released a Facebook Home MOD that works for all Android devices without root. According to XDA Facebook Home MOD is tested on GNEX, Nexus 7 emulators. So, continue to find installation instructions for Facebook Home MOD.
Uninstall original facebook, facebook messenger and facebook home apps. If facebook is pre-installed then you probably need root to remove it
+ Facebook Messenger with Chat heads fix
- Extract .rar!
- Install com.facebook.katana (FB app), then com.facebook.home (Home app).
- Also install com.facebook.orca.apk (Messenger app).
- Enable facebook home under facebook app settings.
- If you face any issues, reboot into recovery and wipe dalvik cache.