However, these will likely be just about the only things Apple continues to update for Lion over the next year.Development of OS patches costs Apple money and developer resources.
Still older Macs can't even be upgraded to Lion, meaning they'll be stuck with Snow Leopard (version 10.6.8) or some earlier version of OS X.
That's not a good thing, because not only does it mean there won't be any more security patches from Apple, but many third parties have already stopped releasing updates compatible with these operating systems as well.
However, some Macs are still limited to Lion (version 10.7.5), which is evidently no longer getting security patches now that Yosemite has been released; the lack of a Lion version of the recent Security Update 2014-005 is a harbinger of things (not) to come.
In recent history, Apple has only patched operating system vulnerabilities for the current and two previous versions of OS X.
Like last year with the release of Mavericks, Apple chose to continue supporting all the same Macs as the previous release of the operating system.
This means that if your Mac was compatible with Mavericks or even its predecessor Mountain Lion, you'll be able to upgrade to Yosemite.
Designed for mac OS and i OS devices, mac OS Server makes it easy to share files, schedule meetings, synchronize contacts, develop software, host your own website, publish wikis, configure Mac, i Phone, and i Pad devices, remotely access your network, and OS Server is an application you can add to mac OS right from the Mac App Store.
Anyone can quickly and easily turn a Mac into a server that’s perfect for home offices, businesses, schools, developers, and hobbyists alike.
designed to run on Apple's Macintosh computers ("Macs"), having been preinstalled on all Macs since 2002.
Within the market of desktop, laptop and home computers, and by web usage, it is the second most widely used desktop OS after Microsoft Windows.
OS X 10.7 (Lion) is no longer available for purchase from the Mac App Store.