I just went to the ticnet.se website, and I could still reserve the maximum amount of 12 tickets together in any price range... Doesn't look too good for selling out the concert. :/
I can say this:
Boyband Westlife played in Globen some days ago, and it was half empty, half filled...
And they have had some ads in papers!!
Queen + Paul Rodgers hasn't and I think it'll be at least half empty, half filled for sure I hope!!