i trust to conitec. There is very big difference between a6 and a7. So i think there will be very big difference between a7 and a8. I think, Jcl did not explain all the innovations of a8.(what about directx[9?-10?]) Nevertheless, there are great new features as him write, except for two things (IMHO);

*Realtime shadowmapping is not a great innovation. This is necessary. Sorry for bad language but stencil shadow is crap, very very crap. Year 2010 and realtime shadowmapping is necessary.
*PhysX is necessary too. We talked about new physic engine 2 years ago. * *
I think,these two features(or just realtime shadowmapping) should be in a7.

Apart from these, i did not spend thousands dollars for A7, and i am very glad with it. So, i am eagerly waiting for A8.

Btw, i'm waiting for the next a7 update. i need sv_info. Please Jcl, hurry up! laugh
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Sorry for my bad english.