A few of points - first it's a developer's beta, so there is no guarantees that how things are now will be how things are when it is actually released this fall. Second, it's a developer's beta. Lot's of things aren't quite finished yet. The idea is to give developers a heads up on the direction things are going and to let them start programming towards the new features. The last developer's beta was quite different than what was finally released. Some features were added, others removed.
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