Thank you for asking.
Actually I don't know for certain. Although most of the conversion is quite easy, the GUI functionality is much more complex.
I'm using Libre Project to keep track of things but it doesn't give a timeline, just a rough percentage of work needed for each module, subroutine, function etc.
HN 5 Creator is still not yet capable of fully running the Chart Demo project.
It can compile most of the scripts into runtime code but the Runtime Engine still needs a few weeks more work.
The GUI, card designer, and control dragging all need more work - yet another few weeks.
Then there is the testing and debugging before release.
The Windows OS version will be released first, followed by Linux.
OS X needs a lot of work, especially to run on OS X Catalina.
Although the current version of HN 5 runs on both Windows 7 and Lubuntu, no OS X versions has even been built yet.
Once the Chart Demo is working smoothly, then HN 5 Creator can be released, and no doubt lots of bugs will show up.
HN Player V5 will be released at the same time as HN Creator.
HN Developer creates HN plugins, but should not need much work as its very similar to Creator, except for some GUI differences.
Please note, these are all alphas.