A few days ago they launched the Dusk testnet. I tried to build a node, but ran into some problems. I reported those problems on Telegram which led them to discover some bugs which they fixed overnight and in the weekend. Most issues are already closed:
So did you manage to set up a testnet node in the end? It would be interesting to know if any major problems appeared during the testnet phase that could potentially postpone the release of their mainnet.