The Volturi May Not be Invading Italy on May 25th

New Moon filming will still be in Montepulciano, says TwilightItalia, however the dates are NOT confirmed:

The dates of 25-30th of May actually are neither certain, nor confirmed. The only official channel enabled to provide sure information regarding this matter will be Montepulciano's municipality, from which we'll be expecting an official communication shortly. This does not deny the shooting in Montepulciano, just the dates reported before..."

The Official Eagle Site says that Montepulciano doesn't refute the fact that is involved with the film but strongly said that doesn't know nothing about the days and that just the municipality can talk about the movie, not with the Tourism Association."
Thanks to HisGoldenEyes for the tip!