The two featured together are Jedi Knight Luminara Unduli and her padawan Barriss Offee.
Luminara has the green saber and Barriss has the blue one.
Both these jedi will be featured players in the upcoming novel by Alan Dean Foster called "The Approaching Storm". The story reveals the events leading right up to the opening of Episode II (much the same way James Lucerno's "Cloak of Deception" does for Episode One)
Check out the link below for a synopisis of the upcoming book (it's due out at the end of this month [January])