That will be true for the US sites as their tickets are not confined to a calendar year, as per my previous post. If it is UK websites you are looking at, I would double check with them if considering using those - the UK tickets are definitely only good for the calendar year. If you specifically buy a 2011 ticket and get it at this year's price, then good for you. Maybe someone else will have some advice on this but I would be very cautious as I don't know if there is any way of telling by looking at the ticket whether you have been sold a 2011 or 2010 one, aside from the price you pay. Also, to the best of my knowledge, UK tickets cannot be upgraded or changed.
