It sounds like the plans are to make Drupal a JS-required CMS, which would destroy its balance of features and compatibility/user-friendlyness.
I don't believe this is the case. The JS developers are always discussing how the behavior degrades without JS. The JS that is going in, it seems, is providing lots of nice-to-haves, but they are not making JS a prerequisite for Drupal...the software will still work without it; the user experience will just be a little different.
If I am wrong, someone please correct me, because if this is not the case then I have a huge problem with it too. There is nothing worse than sites that require JS to function properly...well...ok, sites that require IE are worse. ;-)