What do you expect to gain by waiting for new motherboards? About the only feature coming down the line that I can think of that might be worth waiting for is native USB3.0 support, but personally I don't think it is.
Also, what do you intend to use your system for. It can make a big difference on motherboard selection.
I just bought an ASRock Extreme3 Gen3 for $125 and from what I've read it is more than capable at overclocking and has all the features I need. If you need more features there is the Extreme4 Gen3, or you could look at some ASUS or gigabyte boards.