Abba performing "Dancing Queen" at the wedding, again?

tomorrow ... Sweden's Crown Princess Victoria marries fitness trainer Daniel Westling. Five hundred million television viewers across Europe are expected to watch the 20m Krona (£1.7m) spectacle in Stockholm's specially renovated cathedral.

That report from The Guardian also notes that:

even non-royal watchers have taken an interest in the celebration, which it has been rumoured, will see Abba re-convene for the first time in almost three decades to perform for the royal couple — and play Dancing Queen.

Will be neat if they did perform :)