I have v17 and Beta HiDPI Pro+ side-by-side on a 4K 26in @ 150% mag -reading distance from screen circa 18in-24in.

Not easy to replicate an exact visual, but here is a 300dpi image https://initiostar.co.uk/demo/XaraPr..._XaraPro17.png

Discernible differences as you might expect are crisper images and text. Clearly it is beta and there are a few scaling issues to resolve. Don't expect icon sizes to change, but what is apparent (in some cases) is handles and dialogue boxes look too small.

I made sure the installation was separate from any upgrade and so far, I have been able to open v17 websites/supersites in Pro+ without disasters, and reverse back into v17 to ensure they continue to work at that release level.

The Beta trial ends nexts week, but for me this is worthwhile analysis of what one might expect for real.

Gary