I'd be wary of that. He needs to make some predictions that can be tested or it's just another string theory/brane theory/many worlds/etc. theory that makes a lot of claims but hasn't advanced the science at all. We need testable predictions, preferably new particles in energy regimes we can actually reach with current or near future tech.

Edit: There's a big danger in accepting theories because they have simplicity or beauty. That's how we ended up with String Theory and Fundamental Theoretical Physics has basically stalled since the '50s because of it.

Ironically, the blog post where he announces that he's cracked the Theory Of Everything has the most humble tone of anything by him I've ever read.