Here's a list of the Macs that will be able to run OS X Yosemite once it's released this fall, compiled by Ars Technica. If you can run Mavericks you will be able to run Yosemite.
Macs Supported: ● iMac (Mid-2007 or later) ● MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later) ● MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later) ● MacBook Air (Late 2008 or later) ● Mac Mini (Early 2009 or later) ● Mac Pro (Early 2008 or later) ● Xserve (Early 2009)
For more details on Yosemite click here. We'll be offering a more in depth look at what's new shortly.
What will happen with current apps like Microsoft Office and Quicken. I need those apps and not sure I want to go thru another ordeal where they didn't work. One of my printers wasn't supported either. I hope that won't happen any more. It is a bit concerning to me when these changes come along...
I wonder if it is feasible that with the new system there can also be a link to just revert it to the previous system without trying to figure out how to do that or hoping the prevevious system is still available.