The number of unconfirmed transactions has catapulted from ~9k to about ~50k right now, which means there's large amount of activity.
It will take a while for the dust to settle.
You can watch them here https://www.blockchain.com/btc/unconfirmed-transactions
chart https://www.blockchain.com/charts/mempool-count
A better graph of the current transactions sitting unconfirmed: https://jochen-hoenicke.de/queue/#0,24h
Note: I'm not saying that these are all from the hack, I'm saying that the activity on the Bitcoin blockchain has significantly spiked, and the hack was still ongoing at the time of writing this.
