What part of the publisher is the ONLY one that can give the okay for a patch release don't you understand?
Obsidian has stated (or atleast their CEO has) that the patch is ready (ie. they've done their part), all that is being waited upon is LUCASARTS releasing it.
The game was developed by Obsidian, but it is Lucasarts' property and thus any patches, additions, etc. is their call and theirs alone.
For someone who claims to be a publisher, you sure don't seem to understand how the business world works.