Which state enters the Eurozone next?

[PGSable]

Slightly OT - with Denmark and Iceland likely joining soon, how does this effect:

Sweden's likelihood of a new Euro referendum and
Norway's likelihood of going it alone (well, with Switzerland) in the EFTA for much longer.

From what I heard, Norway was always likely to apply for EU membership if Iceland joined and vice versa, because each country is afraid that, if the other one joins alone, it will get all the good fishing deals from Brussels.

I would like to see a poll on the euro in Sweden...