The Imageprint RIPdriver for Epsons 3800 is available.
I just received an email from Colorbyte with the information that panoramic printing with this printer is possible.
So the restriction on used paper length caused by the Epson driver is a thing of the past.
This is for me as a panoramic photographer good news. Upgrading from an Epson 2100 Imageprintdriver to a 3800 one costs $550