The new inventory replaces the old rings and gives the interface a whole new look. In fact, as soon as you load the game you'll notice that everything is completely changed.
Items can be collected, stored and combined to solve some of the puzzles, or generally make life easier for Lara. E.g. combine a torch (if you have batteries) with your gun and you'll be able to target in the dark. Collect dry sticks from the floor and Lara can then light them from a fire - they will burn for a limited time. Binoculars will also be available to enable Lara to read inscriptions that she can't with the naked eye - she can zoom in and out with these. Once read, info will appear in the diary (in inventory) as if Lara's written it in herself. Maps can also be collected and when pieced together may give access to secret areas... The diary also features hints and tips, save-game, a scrapbook and other useful clues, notes etc.
ARE THE LEVELS DISTRIBUTED ALL OVER EGYPT, OR IS IT ALL SET IN ONE LARGE TOMB COMPLEX?
We have several locations such as Cairo, Alexandria, Karnak, Pyramids at Giza etc so there's plenty of variety in the actual locations. The locations are more integral to the storyline, which is driven seamlessly through - gameplay will dissolve to cut-scenes and FMV and vice-versa. Loading screens are eliminated so we're looking at a really continuous, single adventure that will really keep the player focused.
To link the more remote Egyptian locations, some levels will be played that actually take Lara to the next location e.g. jeep chase and train levels - very new and exciting!