I've been checking these forums every month for an update on this.
Yesterday I decided to just contact Arturia through their website.
Today I got this response from the sales dept.:-
"Thank you for using Arturia product. There is an update on the way, technical dept hope to be able to get it sorted before Christmas, as they have many many things to do. I cannot assure that the update will be out before Christmas but in the end, there will be something out about local midi out for the Minibrute."
...not the greatest news but at least there is some kind of time frame and assurance that it will be implement.