I think that perhaps the most interesting observation about the Bitcoin Cash blocks that are being mined is that they are not entirely being found by "Unknown" and "ViaBTC"-- those pools were the ones who stayed with Bitcoin Cash through thick and thin.

If you look here:
https://www.blocktrail.com/BCC

Antpool, BTC.top and BTC.com are all in the game. This implies that all of them are devoting at least some percentage of their hashpower to Bitcoin Cash and they all have skin in the game now.

It will be very interesting to see whether they all stay in the game. However, one thing that's clear (and that may explain the breakout, at least partially) is that the success of Bitcoin Cash is no longer entirely dependent on the Unknown and ViaBTC miners-- it is becoming more mainstream.

Bitcoin Cash difficulty already went way up close to 12 hours ago and hashrate dipped way down (as expected):
http://fork.lol/pow/hashrate

Currently, blocks are being mined approximately every 2 hours: https://www.blocktrail.com/BCC

What will happen next is that if there are fewer than 6 blocks mined in a 12-hour window (approximately-- see https://medium.com/@jimmysong/bitcoin-cash-difficulty-adjustments-2ec589099a8e for details), Bitcoin Cash will undergo an Emergency Difficulty Adjustment where the next block will then be 20% easier to mine. It will continue to do this until the difficulty is approximately proportional to that of Bitcoin (~$600/$4300), at which point each miner will decide that it's more profitable to mine Bitcoin Cash and will move hashpower there. This swing will continue to happen every 2016 blocks (which is the "normal" difficulty adjustment timeframe).

Interestingly, there is essentially no correlation between hashrate/confirmation times to Bitcoin Cash price... the most price breakout occurred while the hash rate dipped.

re: wild swings in hashrate--  I assume everyone has seen this article?

https://medium.com/@Mengerian/bringing-stability-to-bitcoin-cash-difficulty-adjustments-eae8def0efa4

I think it's a thoughtful and balanced perspective.

He links to Amaury's most recent post:
https://lists.linuxfoundation.org/pipermail/bitcoin-ml/2017-August/000136.html

Amaury's point, in a nutshell, is that the difficulty swings we are seeing in Bitcoin Cash are nothing (relatively) compared to the general level of uncertainty we will see in the bitcoin network over the next 3 months. The difficulty swings are an inconvenience but don't threaten the fundamental underlying stability of Bitcoin Cash. If you want to remember how crazy things can get with Bitcoin, recall what happened in 2013... https://bitcoinmagazine.com/articles/bitcoin-network-shaken-by-blockchain-fork-1363144448/

Anyways, the set of articles convinces me that (a) the difficulty swings were predicted by the Bitcoin Cash devs; (b) there are very smart people on Bitcoin Cash thinking about the difficulty problems and (c) it's nonfatal in the near term and (d) several potential ways to solve over the longer term.