This is probably due to my naivety, but it seems like there have been a lot of new libraries recently that are basically "Knockout with slightly different syntax". But Knockout is robust, well tested, has excellent browser support, has excellent documentation, and is under active development. Why should I be eager to discard it?
Sorry, wasn't trying to be snarky, just wanted to make sure the original discussion was included with the new discussion. I am actually glad you reposted it, it didn't spend as long on the front page yesterday as I thought it should have.
There a bunch of two-way-binding plugins for Backbone, if that sort of thing is your cup of tea — and some of them are really well done. Apart from EndDash, some of my favorites are: