Taking into consideration Kalypso´s latest reply in the German forum saying that they have nothing new to announce, neither an Add-On nor a gold version and that their responsibility is limited to having had published the main game and nothing more, I´d guess that your option 2 is more probable.

I think it might even be possible that by giving out that press release, Akella wants to generate some new buzz and interest from the public and esp. other publishers they might want to work with for the publishing of the Add-On in the markets that haven´t been served so far.