I'm in exactly the same boat.
I covered the air show of the year (to put it that way), Flying Legends at Duxford, with my now three year old A350, because there simply wasn't an A580 available anywhere anymore. I seriously contemplated getting one, but I guess I'll have to wait even longer before the A77 will be here

.
Bottom line: wait and be (very) patient. Personally I've been waiting for this camera since late 2009...
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Sony
α77V/VG-C77AM/
α350/18-70/70-400
G SSM/NEX-5/18-55 OSS/Lowepro Pro Trekker 600 AW/CompuTrekker AW/Nova 140 AW/Street & Field gear/Toploader Pro 75 AW. And a huge wishlist...
My photos on Flickr...