Yamaha didn't release a polyphonic VL synth, but you can make one using VL plug-in boards, for example an S90 will hold four of them.

While Yamaha didn't, Korg licensed the Sondius technology for the Z1 and the MOSS board, giving 6, 12, or 18 voices of polyphony. Tassman makes physical modeling available in a soft synth--but I don't know if they use the same physical modeling technology as the Yamaha.

I have a VL plug-in on my Yamaha MU100R. I like it overall, although the interface is awkward. But I don't like the way noise gets added to some sounds to provide a "chiff". Somehow, the noise seems tacked on rather than integrated with the sound.

I think physical modeling will become more prevalent as the required processing power becomes more affordable. Let's see what happens on the G2.