The rumormill indicates that the Numark NS6 controller will be available from June 1st.
The NS6 is a 4-channel Digital DJ controller with built-in mixer and four decks of software control. NS6 is a DJ controller and standalone 4-channel mixer with effects, allowing you to mix external sources with tracks on your computer.
NS6's dual-platter system has been designed in collaboration with Serato.
Numark has posted two new videos of the NS6, giving is more insight into this controller and its fucntions. The first video is covers deck controls. The second video covers the browser and mixer.