Bumped into this from the US forums:

http://forums.worldofwarcraft.com/thread.html?sid=1&topicId=27187856197&pageNo=1#4

According to Zarhym:

We have pushed a hotfix to improve hunter damage.

Specifically, we increased the damage of the signature abilities (Chimera Shot, Black Arrow, Explosive Shot, and Kill Command) by 15-25%. This will both improve overall damage-dealing and make sure that these abilities are prioritized higher than other shots. We think this will bring hunters to a good enough state until they hit 85. Aspect of the Fox and Cobra Shot solve some specific issues at higher levels. Marksman hunters may still trump Survival and Beastmaster hunters until they’re 85, since their rotations rely a little on Cobra Shot.

The post is dated 10/19/2010.

Comments are yours. Just thought to share this as I see more QQ threads poping up today.

Just blue-tagging this to make sure more people see it:

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Q u o t e:
We have pushed a hotfix to improve hunter damage.

Specifically, we increased the damage of the signature abilities (Chimera Shot, Black Arrow, Explosive Shot, and Kill Command) by 15-25%. This will both improve overall damage-dealing and make sure that these abilities are prioritized higher than other shots. We think this will bring hunters to a good enough state until they hit 85. Aspect of the Fox and Cobra Shot solve some specific issues at higher levels. Marksman hunters may still trump Survival and Beastmaster hunters until they’re 85, since their rotations rely a little on Cobra Shot.

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This has also been posted in the '[Patch 4.0] Discussions and thoughts' thread in the General forum:
http://forums.wow-europe.com/thread.html?topicId=14870320215&sid=1&pageNo=32#634