- WiFi/Bluetooth drivers (they were terrible at release)
- Intel HD graphics drivers (improved battery usage, responsiveness in some applications, and also seems to have reduced heat slightly (when running on battery))
- They improved the touchpad's auto-disable thing while using the keyboard (so it actually worked!).
- Touchscreen accuracy improvements both for pen and finger.
- More pen customisation (with associated app)
- Several crash bugs fix (e.g. BSoD during shutdown)
- A bunch of sleep specific fixes (e.g. faster entry and exit from sleep, a crash bug here too, and so on).