Now I think you're telling me something of fundamental importance:
I have assiduously applied every upgrade suggested by ">Software Update.." (except for iTunes) since purchasing this Macbook Pro 2 years ago. But all it suggests it is possible to upgrade to is 10.6.8. I have been cursing Apple for offering an extended maintenance contract which lasts longer than they continued to create new compatible software for this machine. Apparently we are supposed to ignore the automatic software update feature and do something else? Update OS's by hand? What gives? What is the point of automatic update if it serves only as a red herring to dissuade those of us in the field from updating manually???
Now that I've been tipped-off, I'll google the issue, but what a surprising twist of events! Thanks for taking the time to criticize my out-of-date OS, or I would never have known my MBP may be compatible with unadvertised newer S/W!