The next milestone of the libmrtd project, a ISO/IEC 19794-5 parser. ISO/IEC 19794-5 is titled "Biometric Data Interchange Formats - Part 5: Face Image Data" and provides an international standard for facial images and related information (such as angle of the face, MPEG4 feature animation point, encoded information about medical glasses, eye patches, etc.).
Using this parser it is possible to extract all the image metadata plus the JPEG image itself from DataGroup2 of an ePassport. I've tested it with two passport samples from different vendors, and it works fine.
The next milestone are cryptographic routines for checking the document signature (Passive Authentication) and Active Authentication. Also, Basic Access Control needs a lot of testing.