I do not know if any announcements are made regarding the number of DLC that will come out for Skyrim however the previous 2 TES titles had only 2 mayor DLC's so I am guessing this DLC will be the last for Skyrim and the gold edition should go retail soon?

http://www.gamesas.com/topic/1427298-dragonborn-details/

"And we’re still not done – we look forward to sharing more Skyrim news next year!"

I thought I remembered reading/hearing that they were going to do 3 big DLC and some small ones, frankly I think it would be nice if they kept the DLC going until closer to the release of Elder Scrolls 6. They'd get the make more money and keep the game interesting, as not everyone that plays had access to mods. Just a thought though.

This is what I was going to say, but some guy from Wales beat me to it...

I hate posts with titles like this . And no it's not the last dlc.