It looks like not (you'd assume they'd have called it out if it was). I really don't understand the utility of a touchscreen without a 360 degree hinge.

This is my main question as well. Either stock or with some sort of separate hinge kit, that would completely seal the deal for me.

Response from the support (according to the Framework forum):

The Framework Laptop 13 Pro Touchscreen supports touch input but does not currently support stylus input. Like other Framework Laptop 13 models, it opens with a maximum hinge angle of 180 degrees and is not designed for pen or convertible-style use.

Pretty disappointing honestly.