Well that's a surprise - or maybe not !
It is no surprise to see MS roll out the PR machine to try and spin MS as the good guys, and the rest of the world as evil. Quite frankly, by submitting their proposal for fast tracking , they are just taking the wee-wee. I've read it, well some of it at least, and think they should give it to some 6 year old kid to clean up a bit !
Amongst what's wrong with it :
We have an internationally agreed standard for country and language codes - so MS insist on using their own different one (bloat).
We have an internationally agreed standard for representing dates & times - so MS insist on using their own different one (bloat). They even inist on redefining the calendar to incorporate their Excel bug over handling of leap years !
See a pattern emerging here ?
And whilst this is put forward as a standard to allow interoperation, some of it is carefully defined in terms of what their own proprietry and closed programs do - in other words, you need to know the internals of (for example) Word <something> in order to interpret the contents of some data structures. Thus it is not even legal in many countries to fully implement it !
No, this 'standard' is nothing more than an attempt to get ISO support for more vendor lock-in, whilst ticking the "standards complaint" box for government and large corporate, and diverting attention from the real atempts at truly open documents.
Claims like they make here are easily seen for what they are, corporate lies and bulls**t - just like they've been doing for years !