The best part is that it includes the Special Edition Web Interface Guide . Which will be helpful to you if you want to host the game for your own gaming group, or if you're looking to turn the game into something more.
This content is free and comes with no strings attached. It will not be sold as DLC in any other future game. You can download it once, install it on any number of other games as part of your own private installation of the game. You don't have to explain to your friends why you have an extra copy of Anno 2K20 around. It's a bit like how you get some people to buy you a copy of GTA V every time you buy GTA IV; only this one is legit.
The version I'm working on right now isn't the official Special Edition. It's still very different from what I'll release at the end, since I'm still working on the last chapters. I'll release the final version in a few weeks.
Anno 2.0: So, you'll be able to play Anno 2070 using the Anno 2.0 engine. It's the same game, but improved in so many ways. You'll get to see these improvements in the form of new ships and missions, and new things you can do in the game. It's very well done, and the new features are designed to come with a lot of depth.
If you buy the normal edition on Steam (or any other website), the disc contains the normal edition of Anno 2070. If you buy the Special Edition on Steam (or any other website), the disc contains only the normal edition of Anno 2070. (This disc will not be sold separately) 827ec27edc