What is the "software upgrade" available for the OS X 10.5.8?
10.5.8 is the last update for Leopard
To get to a newer version of OS X you must upgrade
To do that you must purchase the Snow Leopard install DVD from Apple
This of course assumes that your iMac can run 10.6
Here is a link to buy Snow Leopard, but you need to wait to use it because the Apple Store is being updated, probably because of the meeting Apple has called for today.
Snow Leopard Purchase
Yes, I thought that Apple had brought it back online but I was not able to get into check for the url so I stated the old way by phone.
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