Search funtion doesn't seem to be working, so I can't find any information about this or if it has already been posted, but... The downtown Public Market is in the process of expanding, with help from the City of Phoenix and some grant money.
Grant money was provided to provide a redesign of Pierce Street in front of the market (Central to 1st):
http://phoenix.gov/news/071610neagrant.html
Also, they're currently repaving the actual lot the market sits on and providing more shade structures and misters, etc.
The food trucks will be on Pierce Street and continue their Food Truck Fridays and wed/sat operations, and the market will continue to be open for business in the store or on Pierce Street.
This is great... sounds like it is becoming a real public market. Now if they could only continue to get more food and produce grocers and even more food trucks, and less trinket hawkers.