New Guidelines for Theme Development

I just came across this info Guide to Reviewing… which also contains links to other guidelines related to www.ads-software.com.

My question: There seems to be some guidelines being implemented (or will be implemented) to the development and coding of themes, but if someone could provide some clarification on…Do all these guidelines apply “only” to themes being submitted to the repository here at www.ads-software.com or does (and will this) apply to other resources such as theme developer websites, marketplaces like Theme Forest, Mojo Themes, etc?

Thanks in advance.