Deadline Hollywood reports that Universal has grabbed the domestic distribution rights to the feature, and attached along with this news is the following tidbit: "Tom also wrote the screenplay with Nia Vardalos. (He hatched the idea in 2006 under the title of Talk of the Town, he got a first draft from Nia Vardalos.)" Since then, the pair have been working on the script together. You might remember, that he and Vardalos go back some years -- he produced My Big Fat Greek Wedding and Connie and Carla, and executive produced the recent My Life in Ruins.
I'm not sure why she was left out of initial reports, but it's going to be interesting to see how people react to the new news. Does it make you less interested since she's had a heck of time with her career lately? Or, could this be her Sherlock Holmes? That one did wonders for Guy Ritchie's once flailing career.