In German-Version: LR 2015.6 Bearbeiten in Photoshop 2015 ... on Mac. This should pass one or more pictures to Photoshop 2015.5. But it do nothing more. I think the new folder and name of Photoshop 2015.5 isn't change in LR 2015.6. But on my own I can't change this in the properties.
I have a found a workaround on my own: Adobe has change the Folder-Name. First make a Alias from the new Programmfile Adobe Photoshop CC 2015.5.app and change the name to: Adobe Photoshop CC 2015.app (without the Word Alias). Then move the Alias in the old Folder Adobe Photoshop CC 2015 Now LR 2015.6 open Photoshop with your pictures. An if you have Plug-Ins in the old folder move it in the new folder. Have a good day.