The most noticable change that I have noticed so far is a green logon screen, and the mouse pointer now seems to be borked on my Kinetic Risc PC.
Other people have also had sound problems with Kinetic Risc PCs.
Castle have also approached ROL about including Select features into their Merlin project.
The first installment of Select 4 is expected by Christmas, and will include a full set of postscript compatible fonts.