We're not assuming anything; they're actually doing it. For instance:

http://joris.kluivers.nl/blog/2012/03/13/new-objectivec-lite...

The language may be decades old, but clearly Apple is continuing to advance the compiler to improve the language's syntax and verbosity without breaking the runtime.

blocks and arc go a LONG way

The language is almost 30 years old with remarkably few changes, but we've seen a (relative) burst of improvement in the past 5 years. Properties, fast enumeration, and automatic refcounting all reduce the verbosity of Objective-C code.

Also, the string literal syntax for arrays, dictionaries, and numbers, and automatic property synthesis added in LLVM 4.0 - most welcome additions.

They add every year new features to the language like blocks and a lot more which is currently under NDA so I can't tell.

Why do you assume that Apple isn't working on his language? They are heavily developing it!

I'm not assuming anything... "assume" was used in the post I responded to, and asked why. I don't use ObjC myself, though I would say that "add new features" does not imply "reduce verbosity" in any sense that I can see.