It appears that an all volunteer group calling themselves "Glitchen" are working with original developer Tiny Speck to see the game brought back to life under a new name, "Eleven". According to Eleven's site, the Glitchen will use the released code and additional tools presented to them by Tiny Speck.
How are you collaborating on this project?
Tiny Speck were gracious enough to give us an instance of their new product Slack to develop Eleven. It allows a project level chat, individual person to person chat, and sharing of editable documents with everything being searchable. We are also using Trello, which is a to-do list and task manager. It's very versatile, and ensures that everyone has an idea what tasks are being worked on, and what needs attention. This is a very large project, and it's even more useful that it integrates with Slack!
Want to know more? Head to the Eleven site to read the FAQ.
Source: Massively