Check out my suggestion for a new transhumanism movement logo. It is based on the currently used h+ abbreviation and meant to update the currently used logo shown on Wikipedia.
The letter H represents humans, and the + sign the post human era and the augmentation of the human body. The letter and the sign are fused together creating a new whole just like the transhumanism movement promises. The plus sign (cross) demonstrates a positive outlook on the future and healing of the human body. The primary cyan (light blue) color represents the future, technology and freedom.
If you're interested to learn about H+ watch some interesting videos on the subject.
Update: Readers suggested that the logo can also be read as "I+" as "Me Extended" or "It" as "Information technology". Both meanings apply to transhumanism.
Renat Yakubov on G+: Good one, as for me. It's nice, that this logo looks like I+ and H+ simultaneously, reflecting our personal and global goals.
Allen Hildebrandt on G+: I actually like it.... "I plus, H+" and a combination of the H and Plus....