On the other hand, a lot of transhuman literature is very cyberpunk done far in the future. Eclipse Phase, Richar Morgan, and Peter Hamilton are examples.
So transhuman is post-cyberpunk? Makes sense. And speaking of Peter Hamilton and Eclipse Phase, the very first thing I thought about while reading through EP was Hamilton's Pandora's Star
and Judas Unchained
Well, it depends how you're defining post-cyberpunk.
Post cyber-punk refers to works that are, for lack of a better term, descended from cyberpunk. What styles and themes follow as outgrowths and reactions to cyberpunk.
Transhumanism is more properly a philosophy, but in literature it exists in two main forms. Those stories about transhumanism or which use it as a plot device to examine the concepts and principles of Transhumanism. These predate cyberpunk, and are not post-cyberpunk.
Then there are those stories that use transhumanist and post-human elements in their background and plot, but aren't actually about them. A lot of British new space opera is this. These can, but are not neccessarily, post-cyberpunk.
Since EP's made by a number of folks who wrote Shadowrun 4, and thouroughly embraces elements and concepts popularized by authors who are part of the post-cyberpunk movement, I feel very comfortable calling it post-cyberpunk.
I'm not completely sure that Hamilton's Commonwealth Saga is post-cyberpunk though. Rather, I should say, I'm not entirely convinced it's only post cyberpunk. Morgan's Takashi Kovacs novels, however, are most assuredly post-cyberpunk, and often seem to desperately want to be classic mirrorshades and heavy metal cyberpunk.