...
Today's Operating Systems
Windows
As of September 2013:
Current: Windows 7
New / Upcoming:
...
Obsolete: Windows 3, 95, 98, 2000, NT
Apple
As of October 2013:
Released 10/22/13: OSX 10.9. Unknown, since new.
- As the release date, Symantec anti-virus maker does not have a date when they'll have a client ready.
Also currentCurrent: OSX 10.8 – released in 2012. Very good, stable.Upcoming: OSX 10.9, to be released in Fall 2013
Deprecating: OSX 10.6
Obsolete: OSX 10.5 and older
...