The biggest cause for concern of course is the servers on the backend which power Titanfall. While the beta did give Respawn a chance to stress test the servers, there is still no assurance that there will not be issues. Sure, it does help, but it does not guarantee that the full game launch will be without server issues.
Respawn says that while the beta offered the chance to stress test things prior to launch, the beta was really more about giving people confidence that we are attempting to work out the bugs ahead of the launch and show them that we are communicating with them to give people confidence in what we are doing with Titanfall.
Titanfall is still on schedule for launch on the Xbox One and PC for March 11th in North America and March 14th in Europe. The Xbox 360 version of Titanfall will be released on March 25th in North America and March 28th in Europe. Buyers of the digital version of Titanfall on the Xbox One and PC will apparently be able to start pre-downloading the 40GB game prior the release time. Details on this are still sketchy, but we suspect that it will follow other pre-download releases that we have seen in the PC in the past, but it will mark the first time that a pre-download ahead of time has been offered for a digital purchase of a console title in the Xbox family.