Eh, not really. That's just a popular delusion. Mavericks just further cements that Apple has no plans whatsoever of unifying OS X and iOS on a UI level. To me it even looks like OS X and iOS are moving further apart.
I think sometimes people confuse interoperability with some sort of codebase merge. It makes sense for each release of osx and ios to be more interoperable, and even take lessons learned from one back to the other. It doesn't make sense to merge them, because they are different platforms with different needs.
