I'll admit I was asleep at the switch on this one. Zorin OS 9 Final was released this past Tuesday and I just realized it today. This is a LTS version in the same vein as Ubuntu 14.04 and Linux Mint 17, and will be supported until 2019. The release announcement can be found here: http://zoringroup.com/blog/2014/07/15/zorin-os-9-core-and-ultimate-are-released/
And downloads are available here: http://zorin-os.com/free.html
Even though I prefer to use Linux Mint 17 myself, I still feel that Zorin OS is the way to go for people making the transition from Windows XP to Linux. The desktop looks very familiar to a Windows user, and Wine comes pre-installed so you can run Windows based applications.