rhgb 0.16.4 is already in cvs, and just needs to be built as an update once FC6 is out. It contains 13 additional translations which were missing from the 0.16.3 tarball.
Looks like this is already done: $ brew latest-pkg dist-fc6 rhgb Build Tag Built by ---------------------------------------- -------------------- ---------------- rhgb-0.16.4-1.fc6 dist-fc6 mclasen