Hey guys, I would just like to tell you that after 3 grueling days and 1783 fish later, I can confirm that the Darkwood fishing pole still drops after 4.0.3a! I fished it up in Everstill lake, on a rocky outcrop away from Lakeshire in Redridge Mountains.
It's a beautiful pole, and I was happy I was able to grab it still.
Heres a SS of proof:
http://img543.imageshack.us/f/wowscrnshot120410194024.jpg/
Sorry, forgot to show proof that it was post 4.0.3a...I guess you can see that I am wearing a gilneas tabard.