The Welcome web page that is spawned on first launch of E-Studio and available on the Help/Web menu indicate this current known issue. The integration with the E-Prime Extensions for Tobii in E-Prime 2.0 is around the corner.
As for any other new features and current developments, please see http://www.pstnet.com/e-prime/support/kb.asp?TopicID=2674 and http://www.pstnet.com/e-prime/support/kb.asp?TopicID=2675.
I have forwarded your user id over to the appropriate staff, which will contact you regarding this integration when it becomes available.
-Brandon