Well... I do not know about software versions of physical modelling... think that Tassman is such a thing!? ...
I do know of a few hardware ones though... namely the polyphonic KORG Z1... Impressive?... well it sounds pretty good, but it will not fool a pro... Another is Yamaha's VL synths which come as both an option and is also in several of their synths like the VL1, VL70m, MU100R and EX5R... I've got the EX5R, and I'm pretty damn impressed by it's sound... the only bad thing is, that it's monophonic, so it's only really good for instruments that are generally monophonic, like Reeds, Pipes, Brass... and stuff like Violins etc... it also does strings, but for monophonic use, it's basically useless, and the KORG Z1 is the solution to that.
One thing to mention though is, that without some sort of breath controller, you do not really get that dynamic and organic feel of the wind instruments, but if you do, it can sound so real, I canot hear the diference to a normal instrument, and the modelled one... good enough for me for sure. It's incredibly expressive!!! (The flute in my Action Biker remix was in fact done with a breath controler, and a VL70m)
But if we are to have the processing power to do a full symphonic orchestra in real time, we'll have to wait still, or spend a f****** lot of money on Yamaha gear!
... Just imagine having a seperate engine for every violin player in the orchestra... not to mention the rest...
Still you can get pretty convincing with samples, but you are limited in expression if you want to sound real.... but with so many compositions in the world today made with libraries, I wonder if people are forgetting the real sound of an orchestra...
and now that we are talking orchestration, personaly I'm a bit biased at this orchestral usage in todays games and film... it seems that many regard symphonic music as some sort of "higher artform", that in itself is higher rated than "ordinary" music... I find that silly, but usually even here on RKO/Remix64 it seems to me, that orchestral scores very often get high rates, as if everybody prefers them!?... I'm to say, a bit tired of hearing orchestral music in near to god damn every game or film these days... I miss the good old C64 days, where the composers were much more free, and things was wildly creative... why does every RPG game absolutely HAVE to use only orchestral scores?... it's possible to make bombastic, frightening, tensioning etc. music with synth sounds also... and I find it a pitty that this is not used more.... I remember one game though, that really was creative musically in an RPG game, namely the game "Planescape Torment"... that was a gorgeous mixture of both orchestral sounds but also synth sounds... really pleasing to listen to.
But again... if I got my will every time, this world would look RADICALLY different!