Jimbo announced the intent to move from the GFDL to a new version of GFDL that was cross-compatible with the Creative Commons Cc-By-SA license.
I'm not going to pretend that I understand the implications of all of this. GFDL, admittedly, was never a particularly good fit for a Wiki. Compatibility between GFDL and CC has been a long-term goal for FSF and CC, however, how this affects Wikipedia is unclear. There are murmurings about a "community process" to change the licensing, but of course no amount of community process can change the licensing of the gigabyes of material that tens of thousands of authors have thus far created. Even amending the GFDL doesn't solve the problem, as the works are licensed under the GFDL that was in place at the time of their creation.
I suspect that the "finesse" will be to ignore the explicit rights to the copyright holders of all those fragementary diffs, but this will set an interesting precedent.