Saw this on Daringfireball.net this morning ..
"The single most frequent question I’ve been asked since the event is whether the jet black iPhone is slippery. It’s not. Again, much like the old 3G and 3GS iPhones, the glossy rear surface has a very pleasant tackiness — certainly not sticky, but grippy. Based on my (admittedly limited) time in the hands-on area, I’d call it the least slippery iPhone Apple has ever made."
"The single most frequent question I’ve been asked since the event is whether the jet black iPhone is slippery. It’s not. Again, much like the old 3G and 3GS iPhones, the glossy rear surface has a very pleasant tackiness — certainly not sticky, but grippy. Based on my (admittedly limited) time in the hands-on area, I’d call it the least slippery iPhone Apple has ever made."