(u2.com) -- U2 are hoping to return to North America for more shows this Autumn - and rollover dates for the first North American leg are also on the cards.

While the Autumn leg is not confirmed yet, the already announced opening North American leg is likely to include rollover dates - that is additional shows in currently advertised venues. We will be mailing U2.Com subscribers who have not yet been able to buy tickets in the North American presale with early information on how to buy tickets at these additional first leg shows.

There has been a phenomenal demand for the 'Vertigo 2005 Tour' presale on both sides of the Atlantic.

In North America - where venues are indoor and have a smaller capacity
- most fans have succeeded in getting their tickets but some venues , notably the New York Madison Square Garden show, have reached their presale capacity.

Fans may choose a different US venue but Paul McGuuinness, U2's manager, has told U2.Com, 'We are sorry that presale tickets for the Madison Square Garden show have sold out but it is the band's intention to play more shows at Madison Square Garden in the Autumn.'

Thanks for your patience - and our apologies again.