The sites of all three 2013 Pro Tours have been announced. From the official Wizards statement:
“The Pro Tour visits two new cities in 2013 and returns to a city that has always been a favorite among the players. Pro Tour Gatecrash will be held in Montreal, Quebec, on February 15–17, and the format will be Standard and Gatecrash Booster Draft. Pro Tour ‘Sinker,’ the third set in the Return to Ravnica block, will be held in San Diego, California, on May 17–19, and will be Return to Ravnica Block Constructed and ‘Sinker’/Gatecrash/Return to Ravnica Booster Draft. The season concludes with Pro Tour ‘Friends’ held in Dublin, Ireland, on October 11–13. The format in Dublin is Modern and ‘Friends’ Booster Draft.”
The upcoming Grand Prix locations have yet to be announced, but the first three months of the schedule will be, at the World Magic Cup (August 15-17).