Virtual Components in SW2010

We Go-Live with SW2010 SP4 and Enterprise PDM on August 30th.  We are currently on SW2007.

I see many post, going all the way back to the conception of Virtual Components, about VCs disappearing.  Is it still happening?? Do I need to tell all of our users to stay away from them all together?

Thanks for any input.

SolidworksAssemblies