Got mine today. Like sdsr, I ordered the EOS-M and 22 kit from B&H and got the box with the 90EX too. I can't tell you how impressed I am with B&H for honouring the orders they had, I don't know who paid for my 90EX but it wasn't me. I know Adorama were cancelling the over orders they took.
Having played with the 90EX now I rank it a very close second, and far better value, to the ST-E2 as a remote controller, and it is tiny. As for the EOS-M, it is very early days but WTF is everybody moaning about with the AF? It is so much faster than any Canon P&S and the file quality blows even the G1X into the weeds. Granted with the EF adapter in dull room light the AF is challenged, but I can use all the lenses I have! First impressions are very good, this thing is superb. Looking forwards to the daylight tomorrow to see what it can actually do in decent light.
I knew I had been hanging on to that vast array of FD lenses I had for a reason, not least of which they are practically worthless! But I'm getting an EOS-M - FD convertor next, just to play with.