Looks like Warner Bros. is releasing the movie as part of their manufacture-on-demand DVD release program. What that means, basically, is that Warner Bros. burns a copy on DVD when you order the movie, then send it to you. They're doing the same thing with Season 2 of the Superboy TV series, for those who are curious.
Right now, this is only available in the USA. Eventually copies will be available worldwide through Amazon. It is possible the release will include a digital download option as Warner's MOD releases in the past have, but there was nothing in the article mentioning that.
To be honest, I saw this movie once on TV. It isn't worth the time or the money.