Not necessarily. I just got my new system with Windows 8 a few weeks ago, & it had IE 10 on it. With all the posts here I was seeing, I unchecked the "Install new updates automatically" in the About IE on the Help tab & wouldn't install IE 11 through Windows update. I also keep ignoring the nags about updating to Windows 8.1 that keep popping up every so often.

Poser Pro 2012 SR3 on Win10 x64 w/Reality.
Poser Display Units = inches.