(14 August 2012) It’s interesting to get the new Skype new hotfix version (5.10) updating from “Windows Update” after Microsoft acquired Skype in 8.5 billion US$ last year.
Reference : http://www.microsoft.com/en-us/news/press/2011/oct11/10-13skypepr.aspx
Read more about the update from: http://support.microsoft.com/kb/2727727