While Steam Developer Days isn't a press event per say there is still news coming out of the event and one such tidbit is the revisions Valve has made to the Steam Controller design. The touchscreen that was never actually on any of the physical prototypes Valve have shown has been replaced by eight buttons.
Apparently the touchscreen caused too many issues with backwards compatibility and was therefore dropped. Check out the old and new versions of the controller below.
<bild>Old version.</bild>