Hi,
a lot of users are complaining about the lack of information in connection with engine development and bug fixing. I started a new game project and found great free online solutions for project management which are also suitable for this purpose, for example trello
https://trello.com/home Both the state of development and of bug-fixings based on forum feedback could be seen there with an approximate time frame. You can of course hide secret things on non-public or on beta testers only boards.
It is already used by another nice little game engine for very similar purposes
https://trello.com/b/gHooNW9I/ue4-roadmap Thanks.