[TadW]

According to EETimes they do (emphasis mine):

Using an ASIC twice as fast and eight times more energy efficient than components used in second-generation devices, iRex claims its e-ink handheld aims to replace paper for many mainstream uses.

"With generation three, we have achieved a hardware platform that is fully utilizing all the capabilities of e-ink displays, and is capable of replacing most uses of paper today," claimed iRex CEO Hans Brons.

And:

The iRex 1000, however, is said to offer optimal page loading and pen input, according to Brons, by virtue of an ASIC that performs all background processing steps faster than users can perceive.

"We have put much more horsepower behind the system environment to insure that everything that needs to be done to update the display is done extremely quickly," Brons claimed.