I was just recently introduced to the DNG format which is defined by Adobe as the new, up and comer method for preserving digital files. They are essentially RAW, but in format recognized by Adobe and many others that get on the bus. There are already some cameras that output DNG's natively instead of something proprietary like CR2. Hasselblad, Leica, Ricoh, Samsung and Pentax are what came up on my search. I've been told Son'y Alpha does as well.
The whole idea is that in XX years, will your grandkids photo software read CR2?
7D, RebelXT, 30D, 50mm 1.8, 85mm 1.8, Sigma 70-200 2.8 Macro, Sigma 1.4x TC, Tamron 17-50 2.8, Metz 54, 100-400IS, Kenko Ext Tube Set, 24-70 2.8, 180mm Macro, (2) GoPro