Do I have unlimited capabilities for uploading and downloading data?
You do not. There is a limited amount of bandwidth available for transferring data to and from your device through this service. Your device may stop receiving/exporting data if you exceed this bandwidth capability.
What are the plans for expanding Wicked Free Wi-Fi for next year?
"Moving forward, Boston is focused on strategically connecting the city; strengthening and expanding the Wicked Free Wi-Fi network. Plans are in progress to connect Boston’s 20 neighborhood Main Street programs, with an estimated 130 access points. Boston will continue to increase public Wi-Fi access points to drive economic development and develop municipal Wi-Fi to underserved areas." - Statement from Mayor Walsh's Wi-Fi announcement on April 10, 2014