Tomb Raider 8 will be released some time next year for PC, 360 and PS3. However, not a lot has been revealed. All us TR fans know is that it continues the storyline from Legend (Lara searching for her mother.) No real news (be it trailers, screenshots, or even the official name of the game) will be announced until January.
Until then, dig into the Wii and 360 versions of Anniversary.