Rumored to follow the events from Legend where Lara Croft unravels the mystery behind her mothers mysterious disappearance, TR:Underworld is the first truly next-gen Tomb Raider to be released on 7 formats this Christmas (PS3, Xbox360, PC, PS2, Wii, PSP, XBox though the latter four will be visually degraded versions of the game).

The multi-million UK franchise Eidos will redevelop game play and introduce several new aspects of high-end, challenging and invigorating gaming to consumers of Lara Croft's dastardly pursuits.

Link to article.

HD Images :

One
Two
Three

Spoiler Alert! (Only gameplay aspects, not storyline. Taken from link above. Highlight the below text to read.)

    * Wild animals do not only attack Lara but also the bad guys and bad guys fight Lara and the animals. I like that because this bad guy/wild animal alliances always bugged me.
    * The weather effects are amazing. It looked like a Mexico level we were shown and it was raining and lightning and thunder crashed all around. Here and there the sun came through and all the things that should have a shadow had one. Untill the sun was blocked by clouds again. The rain that ran down the ground, walls, ledges, gargoyles, stairs and Lara looked very realistic.
    * Laras animations are still very arcade style but are noticeably nicer and smoother than before.
    * Similar to AOD Lara has close combat abilities again. Including a tobi geri.
    * She can sporadically pick up objects and use them for close combat, to use them as items or both.
    * The sprint is back. YES
    * The bodies disappear NOT! At least not on the XBox360
    * Lara has numerous facial expressions.
    * Music works like in Anniversary.
    * When Lara moves through bushes the bushes move.
    * Lara does show slight muscles, which is a nice touch of realism.
    * Animals jump over objects to follow/reach Lara.
    * The puzzles we have seen did not look too shallow
    * The paths you have to go are not as obvious as in the two previous games.