I know Windows 10 is new - But Microsoft tends to provide pre-release versions of Windows to companies before it's released so that companies can test with it and make their software ready for that version of Windows ahead of time (I work for one such company). So I thought perhaps Stardock might have been doing this, but perhaps not all companies get access to the pre-release builds of Windows.
Stardock also gets access - they are a Gold Partner after all. However, as I've mentioned several times - it was not until the LAST RTM version was released that any confidence could be had in what the Windows SHELL was actually going to be.
Check your 'pre-release versions' and you should notice quite significant differences in the GUI design. Since Stardock's software interfaces directly with the Shell you actually NEED to know what it is FIRST. Designing Windowblinds to suit what you THINK might be the OS Shell is an utter waste of time.
Now, last I checked, Windows 10 was formally released [and thus 'finished'] to the public on July 29. It's currently the 5th of August.
I'll trust you to do the math...