So i've come across some more sites relating to the "race" for challenger deep that i found interesting from Marinebio.org (a great site, check them out)
BBC has come up with a great mini-site about the race where you can see the physical obstacles the explorers will meet as well as the vessels they intend to use: http://www.bbc.co.uk/news/science-environment-17013285 . There wasn't any info on James Cameron's sub, so I did some digging and found this video which was released within the last week: http://video.nationalgeographic.com/video/environment/habitats-environment/habitats-oceans-env/deepsea-challenge-first-attempt/
I'm excited to hear that they plan to launch in the next few weeks, so I will make sure to keep up to date on that.
Although it appears Cameron will be the first to reach Challenger Deep on over 50 years, I'm kind of bummed that the scientific contestant, Google's DOER, won't be the first. At the same time, such a monumental feat will be better shared by Cameron and his fleet of HD cameras.
My Picture of the Trieste, the first and last sub to reach Challenger Deep.