Leo 6.7.8 is formally due on May 31. However, I'll release it about the time Félix's releases LeoJS 1.0. Félix estimates that will happen in a few weeks, but there is no rush :-)
Leo 6.7.8 is almost code complete. I expect to complete work in about a week.
Recent revs have completed the first draft of the release notes and "what's new" section.
The 6.7.8 branch is a work in progress. I'll follow the distribution checklist in leoDist.leo to update version numbers and other files just before releasing Leo 6.7.8. Until then don't worry about diffs in this branch.
All questions and comments are welcome.
Edward