I'll have to admit I am slightly worried^^ But there are many things they work on without showing us. For example PvE. From what you hear from Dev comments they do have acually playtests for it. There is a lot of backbone work too do. You need systems in place. And they are greating the systems. For example there are almost no advancments/wargear there, but the system is now in place. All that is left is that some guy comes up with the actual Items, and types in their stats. And that takes a lot less time. So yeah, who knows summer seems rather optimistic, but game development is definitly not linear.
