Blame Chrome. Ever since Google started releasing self-updating developer versions of its browser, other have been following suit. Mozilla now users the same concept for releasing early (and potentially unstable) versions of Firefox and starting today, Opera will use the same concept to give early adopters a sneak peak at upcoming version (codename Swordfish) of its browser, too. Dubbed Opera Next, users can install this version parallel to the stable version of Opera (these will remain two completely separate installs).