The new free tool adds to the growing community effort to help affected Mac users remove the malware from their systems. Read this blog post by Topher Kessler on MacFixIt.
This new tool by F-Secure is another advancement by the Mac community against this threat that accompanies not only manual instructions and help from community members, but also swiftly updated definitions for Sophos, ClamXav, VirusBarrier, and other malware scanners for detecting the malware.
On Apple's end, even though the extent of this infection stemmed largely from Apple's delay in issuing a patch for known Java vulnerabilities, the company finally released the patch and has further announced its own Flashback removal tool is in the works.
It's hope that these, and the continuing efforts by the Apple community, will reduce the prevalence of this infection to a minimum.