If you haven't read the latest chapter, go read it. Spoilers below.
Now, based on what Obito says here on the last panel:
The fatso juubi (seen here taking a bath):
Will turn into this version:
Which, from the looks of it, seems a bit more mobile. (Has visible legs anyway)
While it's not the "perfect juubi", it will at least attain to it's "perfect state" (or form) albeit with a lower power than if it had all the (full) bijuu in it (not that it is weak in any respect).