From:
http://news.com.com/2100-7355_3-5098688.html?tag=st_lh
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They have stated that they want to release a new version of OS X every
year, but this is the first time they have hinted that they will not be
supporting any particular OS X version for more than that year and that
they expect all their customers to upgrade their operating system on a
yearly basis," he said.
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So I guess the difference for Mac OS and Fedora users who want to stay
current with security fixes is that the Mac OS guys will have to pay $129
each year.
Of course the Fedora legacy project might remove the need to upgrade your
OS each year.
Dax Kelson