I have the Edit In dialog in Lr set to send tifs to CC 2014 (the topmost item in the dialog). I don't remember whether I changed the Lr preferences to CC 2014 or whether the CC 2014 installation did it but it works. But when CC was installed originally it added 4 more Edit In options at the bottom of the Edit In dialog.
Open as Smart Object in Photoshop
Merge to Panorama in Photoshop
Merge to HDR in Photoshop
Open as layers in Photoshop
These are still set to CC (original). Where do I change the link for these 4 choices?