HTC has released a Bluetooth security hotfix that enhances the security mechanism of the Bluetooth service. Though HTC does not specifically mention what the hotfix patches, it is safe to believe it has got to do something with the vulnerability reported yesterday.
We got to say HTC was quick to address the issue but only after the information went public. The security researcher who found the exploit claimed that despite his repeated attempts to contact HTC Europe for about six months, they failed to release a patch to fix this issue.
The patch works with Touch Diamond/Touch Pro/Touch HD. More instructions on how to install the patch can be found over here.