Hi everyone, we thought some things should be cleared up and decided to post a new thread to keep all comments in one place.
Firstly, the reason the announcement of DX11 coming in a patch was a few weeks before release is because it was when the decision was made. We wanted to release Shogun 2 as stable as possible for everyone so pushed DX11 back to make it as good as we can. The patch for DX11 will be out within 4 weeks.
There is no AA in DX9 because of changes to the lighting system in Shogun 2. We now use deferred shading, the wiki article actually mentions some of the problems relating to it and AA. http://en.wikipedia.org/wiki/Deferred_shading
We are committed to making Shogun 2 the very best game it can be, and we believed it is an excellent game. We understand your frustration with recent news, but we want your game experience to be the best it can be for everyone.
DX10.1 will also have AA, DX10 will not. Both will also be enabled with the DX11 patch.
The graphics hotfix that is coming out will fix an issue where on some powerful macines the settngs were being limited to fairly low, the hotfix will allow them to select the settings their computer can actually handle.
Hope this has cleared some things up.