Is there a new China town?
Yup, as C70 says the area around Concordia University's downtown campus has become known as Chinatown 2 (at least to us hounds!) Here are some threads to get you started:
The New Montreal Chinatown
You'll find a wider variety of types of Chinese food in Chinatown 2 than found in the Cantonese-heavy original Chinatown, including ultra-spicy Szechuan.
Have fun exploring!