If this supposed leak/over-the-shoulder peek at a commuter's laptop is to be believed, the next Tomb Raider game is to be named Shadow of the Tomb Raider (minus contributions from Rhianna Pratchett). Tomb Raider 4: The Last Revelation HD, on the other hand, marks the work of several TR enthusiasts who plan to reimagine Lara's fourth main series outing—now over 17 years old—with "sharper textures, higher quality objects, brand new effects and additional gameplay features."
The Last Revelation was arguably the most realised Tomb Raider of the PlayStation One era, and its HD remaster promises modern effects such as dynamic fogs, smoother shadows and high quality sprites. It's in its early stages of development, however its team, who form the collective Raiding the Globe, have already compiled a few 'before and after' shots which can be found below.
Here's the blurb as per the Raiding the Globe site:
"Tomb Raider 4: The Last Revelation HD allows players to experience Core Design's original and unparalleled classic game remastered with sharper textures, higher quality objects, brand new effects additional gameplay features and much more. Experience Egypt like never before, walking (and running) through ancient tombs populated with fierce traps and deadly foes. More information to be revealed. Happy Raiding!"