Mario,

The change logs can be found here: http://www.empirisoft.com/support/showthread.php?t=938

If it's not in there, then it hasn't been changed or added. Do of course feel free to add requests here:
http://www.empirisoft.com/support/forumdisplay.php?f=6

From the sound of your questions, I think you might be especially interested in the custom item developments we made--you can do pretty much anything you want in terms of customizability if you can program it using HTML, Javascript etc. and have those data saved with the rest of your MediaLab data. As far as psychophys stuff, email John and he can help you with connectivity questions.