Hi Bruce,
Not sure about the release notes but on my machine after installing NT6.40 TinyMCE v3.4.3 is still sitting in the libsrc\win\NetWeb\web\tiny_mce_jq folder and is being copied to the web folder of Example 36 when I compile it.
On the positive side, since you intended to ship v3.5.6 then I will take that as your seal of approval to be using that version.
Thanks
Parker