Greg "Ghostcrawler" Street has posted on the O-Boards that the coefficients of the Warlock spells Corruption and Immolate were hotfixed last Thursday.

Corruption's coefficient went from 0.156 to 0.20.
Immolate's coefficient went from 0.13 to 0.20.

This ends up being a reasonably significant dps buff to all 3 specs. In our preliminary testing, Demonology may have benefited the most.

Since there are now forums for both Warlocks and damage dealing on the O-Boards, there are threads here and here on the subject. You can also discuss it in our Allakhazam Warlock forum in this thread.