What is the difference between Sublime text and Github’s Atom [closed]

Github announced Atom which is very similar to Sublime. Even some keyboard shortcuts like ⌘ + P, ⌘ + Shift + P etc. are same.

1. How is Atom different from Sublime?
2. Does it include IDE features like build tools, function definition jumps, documentations, etc.?
3. Has anyone using Sublime got a Beta invitation to point out the differences?
4. Can I use the themes, schemes and packages from Sublime as is, like Sublime could do with text mate.

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