I've just spent my luch break trying to track down this mythical D60 - the best I could do was a reported conversation from a dealer who said it would be announced Feb. shipping March.
So still no authorative info (dealers get their rumours off the 'net too you know) and no details, though speculation is that it will be essentially a D30 with upgraded electronics and possibly "pro" autofocus.
Other articles I have read would suggest the current CMOS is about as big as you can go, so don't expect more pixels (unless by interpolation).
Anyway, IF the rumored dates are true, and the situation with the 1D is anything to go by, I wouldn't imagine you could get your hands on one before summer.
Just to add a little spice to the situation, rumours also abound that the D30 will be discontinued, and it is already in short supply - ie., if you want one, run out and buy it now! Wonder where that rumour originated
Colin K. Work, Pixstel