We'd hoped for that to be the case, but unfortunately some of the architectural differences between the HDX and non-HDX displays mean that they won't be cross compatible.
Apparently that word didn't get down to show staff. I was told last weekend at CopperState that there would be one software for all 3 screen versions. Too bad that didn't work out. Was considering upgrading one of my screens, but the cost of of replacing both is too great to do that. :'(
I have been posting on another topic which is focused entirely on making the HSI round again and turning off new features, hopefully this topics users are more progressive. Having said that, I do like a round HSI in a perfect world but if that world allows you a better screen layout, as in the case of the HDX then an oval HSI is a small price to pay.
I really wonder about the Dynon support statement above claiming that Classis and touch screens are not compatible with the HDX and do not run the same software. Like others I have recently downloaded V15.0.2.4178 and obviously this software works on both the Classic and the Touch even though they are arguably different and that the touch features and controls only show up on the touch and not the Classis. I believe that the HDX essentially used the same software even though we are being told that it is different and that the two are incompatible.
My reason for believing this is mainly because I have discovered a way to see the HDX layout on Touch and anyone running the same software version can do the same, but only on the Touch. Try it if you like. Select Map PG > Map > Map Menu then scroll down to Edit User Waypoints once there select the return Icon and this will bring up the HDX Icon controls. If you have a play with these you'll notice that they all work perfectly, and do so alongside of your classic or other touch screen.
This begs the question, why did our HSI suddenly turn oval? My answer is that it is required to suit the lower EMS band in HDX, if the software was different this change would not have occurred, but the smoking gun is the glitch that allows you to view the screen layout and Icon controls within the Classic software. The only thing that doesn't work is the lower EMS band which remains blank, the screen knows it's for the EMS though because if you touch that area it brings up tabs across the lower border relating to the engine page.
I suggest if anyone is interested in this they come onboard in a push to have this wonderful screen layout to replace the Classic layout. This would be a great help to situational awareness if you're like me. Imagine just after take-off you are wanting to reduce manifold pressure and RPM whilst climbing out, you also want to establish yourself on track and watch for traffic, all these things can be achieved more easily I believe with the HDX layout.
I believe this layout is being kept (in fact Dynon have confirmed this) for their new flagship product. Given it works on Classic Touch I can only imagine that it is being kept to upsell the new product which is a great improvement by the look of things but maybe not so great that it doesn't require an extra advantage.