I had no idea...

[Newby]

It's still recognized by Blizzard as an expansion pack... that's what Authorized tends to mean in this context... recognized as part of something by the creator of said something. How much more official does it need to be for it to be official?

Hellfire is still an "expansion pack" to the original Diablo, even though Blizzard had nothing to do with its development.

[l2k-Shadow]

Thing is hellfire brings new content to the game itself, aka altering the game, kinda like broodwar brings new units. Those addons don't alter the game, they are just a bunch of maps that anyone could make without having any programming knowledge or source code to the game.

[brew]

exactly, shadow. that's the reason why insurrection and that other one are map packs, maybe they just might be approved by blizzard, but it's still a map pack.

[Hero]

You all need some cocaine.

[idiat]

http://en.wikipedia.org/wiki/Image:RetributionBox.jpg

and

http://upload.wikimedia.org/wikipedia/en/2/28/Insurrection.jpeg

vs

http://en.wikipedia.org/wiki/Image:StarCraft.Brood_War.front_cover.jpg

Which one is labeled Addon and which one is labeled Expansion Pack?
Use a little common sense..

http://upload.wikimedia.org/wikipedia/en/archive/2/28/20070519211654%21Insurrection.jpeg