Able to use these Apps on yosemite?

Can confirm Photoshop CC, Office 2011, and Chrome working on DP4 (the Beta is one version number higher though)

Yes. In addition to the running thread, this is a good source to see if apps work:

http://roaringapps.com/

super tomtendo said:

What about PS CC 2014?[

Click to expand...

MY bad i meant CC 2014, I upgraded all my apps from CC when they released 2014

I was also wondering this because I am downloading it now and since I don't have any important data on my internal drive I was considering installing it directly. Does anyone know how FCP X is performing on Yosemite?

I forgot to add, when i installed the Creative Cloud Desktop app on DP1, I was not able to sign in to my account via the app and install anything. The workaround for that is to open Safari, go to Develop > User Agents and change it to Safari 7.1
You'll be able to log into your Creative Cloud account and download apps then, if you run into the same issue as I did.