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.
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.
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