https://bitcointalksearch.org/topic/dgc-digitalcoin-client-version-02-released-mandatory-update-24-hours-289818
They are hard-forking at block 476,280 (currently on block 418,821). It will be about around the end of the month.
They are changing their retarget logic to limit the difficulty adjustments to deal with prof hopping. I will dig into their code tomorrow to see exactly what they are doing.
From his post, it sounds like he's taken the FTC algo and tweaked the numbers a bit. I predict this will have approximately zero effect on our ability to profit from DGC.