An anonymous tipster is claiming that Apple will release Logic 8 tomorrow during the beginning of NAMM 2007. Logic's last major release came last February with the release of a universal binary version of Logic. That release had been previewed by Apple at NAMM 2006 the month prior.
According to Apple's event calendar and NAMM's website, Apple will indeed be making their traditional appearance at the trade show, so while we have been unable to confirm the tip, such a release is not totally far-fetched.