Dear colleagues and friends, Due to several last-minute requests we are pleased to announce that the deadline for abstract submission to the The Fourth International Rusts of Forest Trees Conference has been postponed to February 5th 2010. As a consequence also the deadline for early-registration payment has been postponed to this date. In the days soon after the above deadline you'll receive the 2nd circular with all details of the meeting. Hoping to see you soon in Florence! Yours sincerely, Salvatore Moricca and Richard Hamelin