User blog comment:WonderfulAsia/Hetalia English Dub Cast Updates/@comment-2004850-20100709204634

Maybe, though I think the American anime industry is much more keen on releasing information when it relates to characters with recurring roles. Especially for a series as popular as Hetalia. In this case, it isn't like Bulgaria who is never mentioned again, even within the manga. And I believe all of the ones listed, besides Prussia, had credited roles in Japan.

It probably is dual roles, though I'm not sure about them not having cast them yet. It's being released in September, but they'll need to send the manufacturers the instructions for the DVD and all that. I believe for manga and novels in general, this is done a few months prior. It seems reasonable to think that they will be giving the manufacturer information soon. I'm getting more uncertain about dual roles as characters have started being knocked off, unless Funi just hasn't meantioned that "Oh, yeah! Patrick Seitz is also Sweden" or something. We have 5 roles left to be revealed and 5 characters without announcements, so I guess it could work out.

It also seems like they wouldn't neglect casting someone for an "important" character like Canada or Prussia. I just hope they put time into Sweden, despite him being a one-liner at that point. It seems like he's getting more airtime soon :)