We shared details on Level-5's Time Travelers based off a feature in Weekly Famitsu earlier in the week. Famitsu.com has followed up with online media.
As detailed earlier in the week, Time Travelers is set in the year 2031 as Tokyo heads towards some sort of currently unspecified disaster.
Famitsu introduced five characters, from left to right in the below artwork: Yuri Fukase, Hina Fushimi, Soma Kamiya, Kyugo Shindo, and Ressentiment. For details on the characters, and a background story summary, see this story.
The girl to the far right is Mikoto, one of the two characters originally introduced for the game. While Famitsu doesn't give a full introduction to her, it does describe her as "the girl who knows the future."
Time Travelers is due for 3DS, Vita and PSP release in 2012.