The DRK developers released Darkcoin Core V0.11.0 yesterday afternoon, which brings a lot of changes to DarkSend, as well as some security fixes and other things. Many people have been eagerly waiting for this release, which has been 2 months in the making and combines the work of no less than 10 different developers.
Darkcoin Core V0.11.0 is forked from Bitcoin 0.9.3 in order to take advantage of nearly 2 years of development committed to the Bitcoin core client. This is a long awaited change, as all previous client versions have been based on Litecoin. However,a s there are no developmental changes going on there, nor will there be any in the near future, it seems like a good decision to switch to Bitcoin core.