Now that we are on the eve of Windows 10 being released, I was wondering if all my CoffeeCup software will be compatible with it. Can anyone answer this for me? Thanks!

You should have no problems with our programs running on Windows 10.

I assume Windows 10 is an upgrade, not requiring the re-installation of all my programs?

It is, but I would recommend to always do a clean wipe and reload. It keeps things fresh as overwriting Windows can cause some major issues with everything. So I always take the longer route, which in the long run saves time.