Already installed? Could you see any differences?
I will check if the German website also has the update available. I guess... not.
Looks the same on my Mac Pro but looks great on my Retina MBP...
The main Differences are under the hood...below is a copy and paste from the Hassy PDF for 2.7
New features in 2.7
Camera configuration tool
Select Camera Configuration in the Windows menu to open this tool which will enable you to edit basically every possible parameter of the camera. Please note that only H5D cameras are currently supported.
In the left side of the window you will find 2 list views containing sets of configuration profiles. The top view represents the connected camera and it's 8 user profile slots - 7 of which are editable. The bottom view represents a local library of profiles stored on disk. Drag and drop can be used to transfer between the 2 views.
The main part of the window represents the data of the currently selected profile. It's been split up in 3 different tabs Controls, Exposure and General.

Compressed multishot file format
Multishot and 6-shot images captured with this version will be stored using a new lossless compression. For 6-shot images this will typically result in files that are only a third the size of an uncompressed file - for multi shots the compressed file is approximately 2/3 of the uncompressed size. At the same time in the new format all 4 or 6 individual captures are stored separately giving us more flexibility in enhancing processing algorithms later on.
Please be aware that any multishot or 6-shot images captured with 2.7 will not be compatible with earlier Phocus versions!
Camera tool enhancements
A capture button has been added to the left of the live video button and further to the left you will find a battery indicator which currently will only show valid info if an H5D is connected. Also the aperture and shutter menus now have graphic indications of full steps.
Notifications
A notification feature has been implemented which will enable the display of software update messages.
Mirror mode
You can now toggle mirroring of the image by clicking the 'R' rotation indicator in the crop & orientation tool.
Crop - move by arrow keys
In crop mode you can now move the crop by using the arrow keys. H5D support
Support for the new H5D cameras has been added.
Support for the new HCD 24 lens and the new Macro Converter Lens corrections for these have been included.
Retina MacBook Pro support
Images will be displayed in full retina resolution.