Witchblade has been cancelled.

Some speculate that her need to spend a month in alcohol rehab half way thru the second season might have made TNT jittery about gambling on a third season.

But this report claims a much shorter time for the rehab:

Shortly after this interview, Butler checked herself into an alcohol rehab facility. After undergoing treatment for about a week, she emerged and appeared ready to begin filming the remaining episodes for the second season of "Witchblade."

Anthony Cistaro appeals to fans to petition TNT to continue Witchblade. If you want to help try to save Witchblade then go here and follow one or more of the suggestions.

I personally think Witchblade is a great show. Petitions did help give Roswell extra seasons before it was finally cancelled. So its quite possible that WB and either TNT or another network could be persuaded to keep Witchblade going for another season.