Textmate for OS X, has a LaTeX bundle (a great bundle indeed). But this bundle packs the latexmk script (version 3.7 or so), I am wondering if anyone was able to update the latexmk version that comes within the bundle, or even to have it use the system's version of it.
PS: I know this is not *TeX related issue, but I though there might be someone with a solution around here. Moderators may delete this if its against the rules.