This is the Last Call for Registration to the International Category Theory Conference, which takes place 20-26 June 2010 in Genoa, Italy. The Preliminary Program is now available at http://ct2010.disi.unige.it/ Abstracts of talks will be available soon, and the website will be updated daily with details about local activities as they get finalized. Those who intend to participate, but haven't yet registered, should complete the registration (and send a copy of the bank transfer slip) *** BY 10 JUNE *** After that date we will accept only on-site registrations, which will have to be in euro cash. Also consider that, at that point, we may be unable to offer some of the items covered by the registration fee, such as the conference dinner. Bob Rosebrugh and Pino Rosolini (for the CT2010 Committees) [For admin and other information see: http://www.mta.ca/~cat-dist/ ]