Snippet from a DH Article on BuddyTV:

Other attendees from the show included Dana Delany, who plays the enigmatic Katherine Mayfair. She did reveal some news regarding the Desperate Housewives guest star Gale Harold. Saying that he was “on the mend,” Delany continued: “We all hope he comes back.”

Huffman went on to say that, “From what I understand, he’s getting better and better, so it’s all good news on that front.” She also hinted that Harold is going to “throw a monkey wrench” into the upcoming storylines of Desperate Housewives, much to the anticipation of fans.

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