It seems Coinwallet have cancelled the 'giveaway' and have started consolidating the remaining dust presumably for themselves. Example tx. They have not released anymore keys AFAIK.
I confirm.There are a lot of low-fee transactions past hours in the network.
I can not analyze everything, but seend to me that these are withdrawing dust outputs to
https://blockchain.info/address/135zDqhbNcmPk3gbyeJmH75yiLdVZechsK
img source: http://statoshi.info/dashboard/db/transactions