Hi,

so, i'd never claim that context produces epub but it can be used in a workflow that involves epub as it outputs xml which can be transformed

That's a distinction that either might not matter or sometimes is lost:

http://tex.stackexchange.com/a/17642/2148
http://wiki.contextgarden.net/epub

"ConTeXt has preliminary epub support..."

Does ConTeXt refer to a suite of tools, or only the "context" command? Either way, it appears that the line between the command and the tool set is blurred a bit. This is completely understandable, too, as you wouldn't want to write, "the ConTeXt suite of tools includes a command, mtxrun, that can produce EPUB files" all the time when talking about EPUBs.

supporting all variants of epub in the backend would be the same as hardcoding all kind of xml dts in the frontend (docbook, tei, whatever); instead we provide a general xml handler and a general xml export

That paragraph would be an excellent addition to the wiki; not sure where though.

Kind regards.