The big question is: do you get the same in reality? If you only need 100MHz there are other options out there like the R&S RTB2000 or GW Instek MSO2000 series.
If it works, DS7000 has many things those mentioned don't..
But it remains to be seen if it some advanced prototype or fully featured product.
I have so far compiled few objections:
1. No high res mode. It can do averages from multiple triggers, but not high-res running average mode. Big fail.
2. Still there is visible lag from button changes to starting redraw with new settings. Frankly, it's not a problem, but it simply shouldn't be there. Optimization of that is in order.
3. It is not low noise front end. It is in DSOX3000/4000 class though, but worse than R&S.. Or Lecroy WS3000 which is also 8 Bit.
4. No math on math. That's no good. For instance: apply filter, that pipe that to differentiation. Otherwise you just get too much noise. Especially when you don't have low noise input, and you didn't implement Hires. Fail.
5. Thinking about that, filters should be separate from math. I should be part of channel setup, together with normal hardware bandwith limiting.
6. There is no custom math formulas. Math is worse than (except FFT) than in DS4000. In fact , it is pretty much same as on DS1000Z. Fail.
I'm sure if I had chance to try it I would find more...
Thing is, hardware is capable of being so much more. We will see if Rigol is capable to bring it to it's full potential.
And of course, how long will it take if they do.