Looks like its official...
taken from Doug Smiths Blog:
"Early this morning, through my agents, I reached a preliminary agreement with the Toronto Raptors,” Calderon said in a message posted on his website Tuesday.
"I want to thank (president and general manager) Bryan Colangelo, (assistant GM) Maurizio Gherardini, (coach) Sam Mitchell and all of the Raptors family for the confidence that they have placed in me. I am sure that together we are going to achieve big things in the future.”
Source - Click here