What computer operating system is involved?
The current version 13/13.1 does not support Windows XP, Windows Vista, or Mac OSX 10.7.
"Upgrade" term used by Adobe is related to pricing. There is just one standalone Premiere Elements 13 with complete content in the purchase. If you can show proof of purchase for a prior Premiere Elements version, then you would be eligible for a lesser price than someone who never had a required prior version.
Sometimes that Adobe "Upgrade" price can be higher than what you would pay to an authorized reseller of the product.
All that being said, if you want Premiere Elements 13 Windows or Mac and you have the corresponding computer operating system, just purchase and download and install (if purchase from Adobe). Also, consider that, if history repeats itself, a new version should be released by Adobe around September October 2015. In the past, if you purchased a current version and a new version was released within 30 days of that purchase, you could request a free conversion to the new version. So, watch your timing on your purchasing decisions.
Any questions or need clarification, please do not hesitate to ask.
If you purchase from Adobe, it sells Premiere Elements only as a download. And, that purchased download is specific to the computer operating system to which it has been downloaded.
If you purchase elsewhere and purchase the box packaging, you get two installation discs - one for Windows and one for Mac.
Thanks but I worked it out.
Thanks for the update.
Probably one of the things that you will miss most is the Premiere Elements 7 Editor File Menu/Export/Movie. It was removed from Premiere Elements after version 7. But, moving forward you will not have to deal with the unique way the 7 handled 5.1 channel audio. Just in case link
When and if needed, please do not hesitate to ask questions about your Premiere Elements workflows.