It's going to be released everywhere around the world.
(You typically only get those annoying international restrictions whenever DRM and other content copyright schemes are in play, which do not affect Marvin because Marvin only supports DRM-free books, at least for now. I love how Apple boasted yesterday about the
brand-new, free "iTunes Radio"... but the fine print they forgot to trumpet is that the
only country where iTunes Radio willl be available, at least initially, is the US...)