Just watched the hands on with the new lg 4x hd with ice cream sandwich on board and it's super smooth. Crossing my fingers we will have the same experience, link below to check it out.
https://www.youtube.com/watch?v=9LnVaHpXacg&feature=youtube_gdata_player
https://www.youtube.com/watch?v=9LnVaHpXacg&feature=youtube_gdata_player