[HarfBuzz] New Indic standard?

[Shriramana Sharma]

Hello. This is w.r.t the mail at 
http://lists.freedesktop.org/archives/harfbuzz/2009-August/000355.html :

Behdad Esfahbod wrote:

<quote>Well, parts of it, specially the Indic parts, are not documented. 
  Worse, with Windows Vista, the Indic parts of the standard changed 
completely.  We don't have any free software implementation of the new 
Indic OpenType standard.</quote>

Where can I get a copy of this standard (new *and* old) and what is the 
status of Indic scripts' support in Harfbuzz with this new standard? 
What is the status w.r.t the old standard?

Shriramana Sharma.