This is a visual summary created by Siko for the French web site Nowhere Else, it summarized all the rumores surrounding the upcoming iPhone from Apple.
Besides the features are values indicating the likelihood for the feature to be true. All of these are educated guesses and none have been commented or confirmed by Apple themselves.
Chance that the 4G will have 4G, 0%.
Yes, 4G is still at its early stage of deployment in South Korea, Japan and United States. I think 4G radio will be part of the iPhone in 2011, which gives us another reason to upgrade.