Sweet weasels, I've got the CE content!
I haven't been notifed and my trouble tickets are still open however, I was reading in another post and somebody said they created a character in the Metaverse and where able to download the CE content from there. I don't know if that's what made it work for me but it's worth a shot if you are still waiting for it.
Click on the Metaverse button at the top of this page.
Select the drop down list for "Account" and choose "Edit my Characters".
Create a char.
Select the drop down list for "Galactic Databank" and choose "Downloads"
Click the Collector's Edition download button.
Put your Serial Number in the Serial Number box and click "Get Order".
Note: There are other ways but you can get your serial number by starting up the GalCiv2 Launcher and clicking on the "Update Serial Number" button...if you have already done it then your number will be there. If not then get it using one of the methods mentioned earlier.
I'm one of the digital download version purchasers and this worked for me. I guess if you have a box for the game you might have to use the Collector's Edition Serial Number box instead.
I should add that I have no idea if someone at Stardock has already merged my email accounts and I just have yet to be told. So maybe this is all a fluke.
Hope this will help someone else, if not, sorry.