Maybe "not yet" was the exact wrong way of putting it. I first purchased my N95-3 in March of 2008, which wasn't too long ago if you think about it. System Rush Evo and those other hardware-accelerated apps were really back in the day. With Nokia's hardware trend, it's not really much of a surprise that those hardware-accelerated apps slowly faded to newer apps that ran smoothly on newer phones that lacked the dedicated hardware components of yesteryear.
I guess that's because the majority of Nokia's recent portfolio doesn't have graphic chips. Consequently, the majority of the Symbian S60 portfolio at present doesn't have graphics chips. That's why I'm doubting that many developers will embrace hardware acceleration without Samsung offering a little push, as the i8910 seems to be alone with the i8510 and the venerable faded Nokias of the past, I believe. It's not like console platforms where developers are developing for a unified architecture, or even like the PC where development is for the vast enthusiast/gaming sector that have a variety of different graphics cards. The mobile phone sector doesn't seem to be trending this way as you either have that graphics chip or you don't, and right now for Symbian most of the S60 phones don't have that benefit (especially since it cannot be argued that the GPU-less N97 will indeed represent the vanguard of the S60 platform, at least alongside the OmniaHD).
I guess what I'm saying is that I have been mostly satisfied with my experiences with the newer stuff that isn't optimized or coded for hardware GPU acceleration. My N95 and N85 both played Metal Gear Solid from N-Gage admirably, and I found the game pretty beautiful. It was a great game gameplay-wise, yet did not skip out on graphics as I might have expected.
Then I read earlier that you mentioned hardware acceleration isn't much of a benefit yet, but really will have potential in the future. Maybe, but this will only be if Samsung gives development for GPU acceleration a boost or more S60 hardware comes along with dedicated chips as well. No one is going to spend the extra time developing for the few devices that can garner that extra push without some incentives.. the widest market appeal will be sought possible in a program and that observes catering to the vast majority; the GPU-less majority will be the preferred for the application to perform smoothly for.
Bringing my XPERIA into a Symbian forum, I'll take that jab as deserved. But I feel that in the WinMo realm the above doesn't hold less true. Or maybe WinMo developers are just lazy.