Yes you still need to support it, for a start users on Windows XP can only upgrade as high as IE8 and XP isn’t going anywhere anytime soon – especially on business networks.
Plus 10% is a pretty high figure, that’s over 700 million people still using IE8.
Alright no problem, I don’t mind supporting it. Hope it dies soon, although it won’t because of those corporate guys. Ah well… What if Microsoft drop support Windows XP?http://www.microsoft.com/en-us/windows/endofsupport.aspx
From personal analytics, less than 0.75% of visitors of my live previews are IE8 users. Less than 3% are IE users in general, with 9 and 10 included, which make up the majority. It’s hard to justify offering IE8 support for future themes when less than 1% of all viewers see it, let alone buy it and use it.
It’s not about who buys it, but who will visit the target website built with your theme. It’s natural that people visiting ThemeForest more interested in web technologies and more computer literate in general, and this kind of people usually choose browsers other than IE. You cannot say that about people who will visit websites built with your theme just because you have no idea who will be the audience.