Photoshop CC’s new Experimental Feature Manager now ships with experimental features that you can enable and try out. These features are not yet production-ready, so exercise discretion while using them. For example, many customers on Windows have been requesting HiDPI support – if you want to give it a try, do the following:
Select Preferences > Experimental Features.
Select the experimental feature that you want to enable.
Restart Photoshop and give it a spin.