Moodle 3.9 is on the way. Whilst this does not necessarily mean that there will be a new look, we have in HT decided to make the Corporate an HT Moodle look the same, should you wish to do so.
HT Moodle has always been about options. You choose what you feel is the best layout for your students. With that in mind, you can also choose the look and feel that best suits you.
This extends not just to the theme, but also the format of your course, and you can combine these should you so wish to do so.
As always, I am interested in your feedback