By my crude reckoning the antenna issue of the new iPhone 4 represents about 10% of the network traffic overall. I am convinced that it only affects a few of the 1.7 million owners some of the time. I reckon that a software update will improve the situation.
I, myself, wait patiently for the white version to hit the shelves. I will fit a white bumper to mine because I love that colour.
Perhaps any software update will be in place by then.
Can’t ( but must ) wait.