Starwars.com has posted a high quality version of the Revan final cover art first scene at the Del Rey Star Wars booth at Comic-Con.
Star Wars Books on Facebook has posted an image from Del Rey's Star Wars booth at San Diego Comic-Con 2011. The crown jewel of the booth is the blown up cover art of the new Old Republic novel by Drew Karpyshyn
I am curious that they have Revan with what looks like a green lightsaber blade. According to the Wook, it looks like Revan used just about every color blade except green.
Revan wielded a violet-bladed lightsaber when he acquired his trademark helmet on Cathar. By the end of the Mandalorian Wars, however, Revan's lightsaber shined a deep cyan. Upon falling to the dark side of the Force and becoming a Sith Lord, he would change his lightsaber color to crimson. Following his capture, reconstruction and redemption, Revan would once again utilize a blue lightsaber crystal in his fight against Malak and the Sith.
SOURCE: Star Wars Books on Facebook and Wookieepedia