When upgrading to WP 3.9 (or upgrading TinyMCE), I received warnings that TinyMCE was no longer supported and that I must use WP EDIT. The warnings were like none I have seen before, and much different than for version compatibility issues. I do not remember the exact wording, but it was clear that TinyMCE would no longer going to work or be supported. I therefore uninstalled TinyMCE from all of our sites and replaced it with the inferior WP EDIT. My brother's companies did the same. Now I see that the latest version TinyMCE "does indeed" work on 3.9. I tested it on one of our sites and it was OK.
I'm not sure whether or not to go back and replace all WP EDIT instances with TinyMCE. If I do, I will have to reconfigure the TinyMCE menus.
QUESTION: I feel that, for future reference, some direction is needed where TinyMCE and WP EDIT are concerned. Will TinyMCE continue to be a viable plugin for WordPress? I read the following but it didn't help: http://wordpress.org/support/topic/wp-edit-and-wordpress-39-please-read?replies=3