Wifi works for me. At one point I thought it wasn't but I found out it was my router lol. Reset it and it picked it up. Nexus S 4G is my play phone until the actual update comes out. This was good enough to take it out the box. Using my Epic Touch 4G now.
I'm definitely getting the Galaxy Nexus when it.comes out for other carriers , because even though it's fun to play with on my NS4G, the screen is so small coming back to from a 4.52. A 4inch screen felt comfortable at first but now.
I also notice the magazine look for the contacts dont look all that high res. Much better then before. It'll look better on the GN I'm sure since the resolution will be higher. The contact would need a good resolution sized picture as well. Otherwise it'll stretch it out forcing it to look granny.