6 Months Ago, PS3Center.net says (in Tomb Raider Added to Platinum Line)  Canada
Tomb Raider Underworld blends adventure, exploration, puzzle solving and combat in an archaeological journey. In an ancient ruin on the floor of the Mediterranean Sea, Lara Croft uncovers proof of the Norse underworld and the mythical Hammer of Thor. ...

And Tomb Raider Chronicles says (in Tomb Raider Underworld scores budget title wrap on Xbox 360 and Playstation 3) Eidos has announced Underworld classified as budget title for Xbox 360 and PS3.

And EL33TONLINE says (in Tomb Raider: Underworld goes platinum)  South Africa
Eidos today announced that Tomb Raider: Underworld will join the Classics range for the Xbox 360 and Platinum Hits range for the PS3 on the 22nd of May. The new range will retail at £19.99. El33tonline quite enjoyed Underworld, in fact we thought that ...

And gamezine.co.uk says (in TR: Underworld trophy update next week, game now platinum)  UK
Not only is Tomb Raider Underworld being welcomed into the Xbox 360 Classics and PlayStation 3 Platinum ranges, the game is finally getting a trophy update for the PS3. Firstly, Eidos today announced that as of today Crystal Dynamics' Tomb Raider: ...