This update is not mandatory, in fact it's the exact same wallet, just rebranded.

Configurations have been moved from .darkcoin to .dash! You’ll need to do the following when updating your client:

1.)
Windows : Goto %APPDATA% and move Darkcoin to Dash
Linux & Mac : Goto ~/ and move .darkcoin to .dash

2.) Move darkcoin.conf to dash.conf
3.) Update and restart

Downloads Available At:
https://www.dashpay.io/downloads/