Press the RMB in top down edit mode. Or you can press F on the keyboard to enter free flight mode, G to go back to top down mode.
A lot is done with the shift key now, Most of the commands are listed in the announcement of the update, on either forum.
It is stickied at the top of this one.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit