Developer Michael Panzer saw this video over the weekend, shared it to his G+ timeline, and asked Hyndman if we could expect to see updates to the L preview at some point before the release is made stable to the public. Rich actually responded, noting that Theyll be some extras coming, like the 64bit emulator. But I dont believe new device images are coming. He later continued on, saying that the Android L preview release is primarily for developers to be able to test their apps and get them ready for the L launch.