Can't wait to learn more about the City of Glass? Neither can we. As such, DICE has released an interactive map of the game world in Mirror's Edge Catalyst which you can find here. Currently, not all of the locations are present on the map (probably due to spoilers) but what's there can provide you with some backstory you may not get in the main game.
Mirror's Edge Catalyst is set to be a more narratively focused experience than the first game and has seen a number of technical improvements, including a fully open world. The game has been subject to multiple delays, but if the Closed Beta is any indication, the extra development time will be well worth it.
Source: [Official Mirror's Edge Website]