Not sure but the guy just one post below was able to post the link, if you can log in and still be able to go through with the application, then its probably a general offer, but for myself it was a personal offer (like one you would get from western or marriot for new cc sign up)

That said i personally dont recommend signing up, 15k on signup, and must spend $5k (only get 1pt per $1 no exceptions like groceries so its horrible) to get 30k avios..
why are you guys so pessismitic, look at the history, theyve been offering it 2x, but atleast 1ce min (usually oct-dec) time... Avios are great for short travel and diversifying your points is essential so yes look forward to this, but also have other types of account open and available as well.

edit: also to add to wiki, mbna sony s offering 10k sign up bonus points + wireless speakers (read it on rfd).. probably could double dip via GCR to get $60 more