[chef] chef 10 vs chef 11 docs

hello,

i realize chef 11 is still under development. is there any doc available yet
that summarizes the differences between chef 10 and chef 11 with respect to
architecture, component software requirements, etc? all i know at this point
(without reading chef-dev) is that the backend data store is moving to
MySQL/postgres.

i'd like to read up on chef 11 as i make decisions on handling my current chef
10 infrastructure. i'd like to be prepared for what's coming, and make
informed decisions.

all i've found so far is
http://wiki.opscode.com/display/chef/Chef+11+Server+Preview

any other docs? or is development on chef 11 just not far enough along yet?

thanks,
kallen