Adobe has updated its DNG digital negative specification to allow a series of image corrections to be embedded in the file. Version 1.3 of the non-proprietary RAW file format allows a series of 'corrections and enhancements', which Adobe is calling opcodes, to be defined in DNG files. These opcodes include the ability to specify corrections for lens aberrations such as geometric distortion and lateral chromatic aberration that should be made to the RAW data when it's processed.

Source: News: Digital Photography Review (dpreview.com)