Doubt that they will be able to hit 24 MP and 10 FPS.
Maybe 18 MP and 10 FPS or 24 MP and 6-8 FPS.
I think people have made certain assumptions about the 1D X's dual DIGIC 5+ DSP's processing speed based on incorrect calculations. Most of the numbers I've seen seem to be based on a 12fps frame rate...but remember that the 1D X has a mirror-lockup 14fps rate as well. Additionally, most people forget that Canon RAW images include a bunch of masked off pixels around the border of the sensor. The actual pixel count is 19.3mp, rather than 18mp, when it comes to computing the data processing throughput rate. Given that:
The 1D X has at at least 33.8MB per RAW image assuming 19.3mp real pixel count. At 14 frames per second, the processing rate of each DIGIC chip would have to be at least 236MB/s (~473MB/s total, vs. the 144MB/s or 165MB/s per DIGIC I've seen calculated by others.) Accounting for some additional overhead, metadata included in the images, etc. I would say the processing rate of each DIGIC 5+ chip to be at least 250MB/s. That is 500MB/s total processing power.
If the 7D II has a 24.1mp sensor, its real pixel count is probably around 25.8mp. At 10fps, that is 225MB/s per DIGIC chip. That is actually LOWER than the data rate of the 1D X at its full 14fps speed. I see absolutely no problem for the 7D II, assuming it continues to use the same Dual-DIGIC approach as the 1D line, and the same generation and version of the DIGIC chips. Actually, a higher frame rate would probably be possible. Assuming an 11fps frame rate, the maximum throughput is still less than 500mb/s (although, with any additional overhead like metadata, dual DIGIC5+ might not actually be fast enough.)