Hey @Aravot,
We do not usually provide details on hardware versions unless there is a significant difference.

Often, the difference between an x.0 and an x.6 model will simply be a manufacturing location or an indicator of where a device is sold. These version numbers are also counted beginning with the versions developed by our teams. This means that if significant changes were made prior to the first public release of the device, it may also be assigned the 1.6 version name.

You will potentially see more significant changes in between major hardware versions 1.0 and 2.0, however the base functionality will remain largely the same. For example, take the KS230 (3-Way Dimmer)

The Updated 2.0 version no longer requires the traveler wires between switches to be aligned, as this was a major pain point during setup. The other change made was the removal of a Double Press Function, due to this feature adding significant delay between when you would press the switch once and the light turning on.

  @Aravot,

It is actually listed on your product's download page(on the firmware tab), its just listed in a difficult way to understand and is often skipped over. Our team has been trying to find a better way to phrase this,  or at least make it more visible.