NewsForge comments on the vote for that materials released under the GNU Free Documentation License are compatible with the Debian Free Software Guidelines.
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In a surprise decision, the developers of Debian have voted that materials released under the GNU Free Documentation License (GFDL) are compatible with the Debian Free Software Guidelines (DFSG) — but only if they contain no invariant sections. The decision settles a longstanding dispute within the project about the GFDL. Although the decision continues to separate Debian from other free and open source software (FOSS) projects, most of which accepts the GFDL without reservations, the possibility remains that future revisions to the license could allow Debian accept it fully.
The decision is surprising because many prominent — or, at least vocal — Debian members have been saying for years that the GFDL did not fit with the DFSG, the set of principles used by Debian to determine what is shipped with official releases of the distribution.
This was spotted at our friends at DebCentral