For all we know, Core Text-backed CJK text rendering works fine in TM2 and the wait is for Allan to finish working on other parts of the editor instead.
And FWIW, my comment about deprecated methods was made with new code for TM2 in mind, not TM1.x code being used on TM2.
That was one example of one new major API that Allan's publicly mentioned he will be using in 2.0. Obviously there would be other changes, and obviously you wouldn't just be able to use whatever has been introduced in 10.5/6 to make it happen. Ultimately every rewrite, new feature addition, feature change, etc. has the consequence of pushing back the release date.
I'm not sure what point you're trying to make anymore; I don't believe I've ever (let alone in this thread) said anything that goes against: Ultimately every rewrite, new feature addition, feature change, etc. has the consequence of pushing back the release date.
I only specifically mentioned CJK because A. you mentioned it and B. I remember from other discussions that it happens to be a feature that you want. It could just as easily have been "a shiner way to parse text in order to theme it for display" or #{random-feature-x-that-we-don't-know-of-yet}.
And FWIW, my comment about deprecated methods was made with new code for TM2 in mind, not TM1.x code being used on TM2.