I was unable to attend today’s #wordpress-sfd meetup and it was brief (brief can be good 😉 ) but the item was that discussed was that the WordPress 3.9.1 maintenance release came out today. Please keep an eye out in the forums for any issues that may come up.
There was a reported issue with the en_GB language pack switching the installation to 4.0-alpha but that pack was pulled and rebuilt.
This maintenance release fixes 34 bugs, please visit the announcement post for more details.