While WOTC may wish the OGL would just wither and die, that does not look very likely. In fact, Mongoose has just released the Traveller SRD under the OGL. The SRD looks fairly complete. The major missing items are careers (one sample career is included) and the classic Traveller aliens. As careers are easy to write up and cloning the classic aliens is easy (as they were clones of standard pulp SF aliens), I expect someone will have a retro-clone of Classic Traveller out in the relatively near future.