The dev team is currently focused on Firefall's open world experience, and said functionality is currently at the center of "a huge push for us this month," Red 5 says.
The dev blog also makes mention of the relatively limited access to beta, and says that players shouldn't worry if they haven't received invites yet. "It is definitely not a demo of the game. There are many times where testing is nothing but repeatedly banging your head against a wall while we watch the log files," Red 5 explains. The devs also plan to roll out more beta invites as infrastructure allows, with the process stretching "all the way into next year."