It is not as big as a Udon tribute book, but it means many visitors trough my website game art hq To see how a fan art tribute project looks on game art hq, visit [link]
It is a non commercial project, starting officially on Februar 12. 2012
The goal is, that more than 150 artists are involved,
there are 90 Street Fighter characters, 2 artists can claim each character. 13 characters are claimed by 2 artists already
Additionally there are ten "challenges" Like drawing Ryu Vs Sagat, or a Group of Street Fighter Characters
These challenges can also be claimed by 2 artists, but only one of them will appear on game art hq, there will be polls to determine the winner. This means something like an art battle between two artists.
There are more details, you can also se who claimed which character already here in the game art hq forum: [link]