CadSoft EAGLE development team announced that is going to use XML format for parts libraries, schematics, and board layouts that means every object and line will be written out in text description. The old files was binaries and from now on we don’t have to worry about binary file corruption. Also we will be able to hand-edit or generate schematics and layouts. This will be a fully documented format and also there will be a converter for old CadSoft EAGLE binary-type formats.
Cadsoft Eagle goes XML – [Link]