Like Pax here said, even if you had a download of your world the only way to access it is through Bytebin's server and that won't be around come August. However, the discussion of keeping snapshots/images of entire worlds is in the works, so you can technically have your world but in the form of a large-scale, color, detailed "picture" with everything as you left it,
The world info won't exactly be usable without the server
Servers can be emulated.
Either way, I don't think the developers are going to release all of Deepworlds data. It seems a bit unrealistic anyway.