Here is what I could find about the WK8SE so far.
The comments are taken from GEMWK4 user forum.

"About WK8SE. It has the same sounds as WK8, plus the Pro sounds. New is the
damper technology, haven't heard it yet. Stereo sample support. *.KAR file
support. 3D + bass boost on speakers.

So long for now!

Greetings,

Joost "

Doesn't sound so great does it (As far as the sounds and the styles go)?

Regards,

F Kara