I wanted to know when you will add vehicles and some examples and also will there be any steam integrated nodes for say achievements like in the previous UDK? I really need these two and I cannot find any of these in the current build.
Yes we will be doing both of those!
Vehicle are under heavy development right now. We are working closely with NVIDIA. The plan is next beta.
Achievements and other online service will be implemented in a cross platform way (ie the same function will work for Steam on PC or GameCenter on iOS), and will be accessible via Blueprints. This will not be ready for the next beta though.