Hi,
While we still have the simultaneous time signature feature on the "wish list", we have had other features that had "more votes" for our musicians and so these have been our priority in development. A multiple simultaneous time signature feature is markedly more complex, and very few of our "everyday musicians" request such a feature. So for now it's still there, but not high on the priority list.
Duplets is another "on the wish list but not enough votes" feature. As a small company, we try to prioritize our development efforts to benefit the most musicians, so it has fallen behind other features that have been implemented. Maybe it just needs a vote campaign
ttfn,
Sherry