[hdmkv]

So they are saying it won't support for example a .MKV with subs? If so that sucks..

mirror88 needs to clarify. Forced subs not being supported would mean whether MKV or ISO, if any sub is marked as 'forced' in the metadata, X6 would ignore it. This is problematic with something like 'Avatar' for example as if you turn off subs in settings, you'd get no English subs during the Na'vi spoken parts, and if you left subs on in settings, you'd get subs throughout the movie, not just the Na'vi parts.