Tomb Raider: Legacy of Atlantis is being developed by Crystal Dynamics and Flying Wild Hog. "For our passionate longtime fans, it's a chance to re-experience the original Tomb Raider adventure with a new perspective. But for new players, it's an opportunity to experience a foundational gaming masterpiece with modernized gameplay while maintaining its original spirit," said Will Kerslake, Crystal Dynamics Game Director.
One thing that won't be maintained, however, is apparently the difficulty of the 1996 installment. When Kerslake was asked about the difficulty of the game, he said, "Part of reimagining a game right is adjusting that game evolving for modern player tastes," suggesting that the difficulty for the new one will be different - likely much easier than the original, if gallons of yellow paint and companions telling you how to solve a puzzle in modern AAA titles are anything to go by.