LG Nitro HD owners will get be able to end their July right by upgrading their handsets to Android 4.0. AT&T announced today via its blog that the 4.5-inch smartphone will be getting Ice Cream Sandwich on Tuesday, along with access to LG's Optimus 3.0 UI, the latter of which offers up improved swipe-to-unlock, more display customization and a new download category in the phone's menu. AT&T's not stopping the upgrade train at LG station, though -- it's also promised updates for the HTC One X and Inspire that should help bump up performance.