Native Instruments released TRK-01, a kick and bass instrument for Reaktor and Reaktor Player.

START STRONG WITH TRK-01
Low end forms the foundation of almost all electronic music, so getting great kick and bass from the start makes all the difference. TRK-01 marries classic mixing techniques with innovative sound design, sequencing, and modulation, so you’re always inspired to write solid and exciting kick-bass combinations. Get your new tracks rolling quicker and sounding bigger than ever before – start with TRK-01.

More info here: https://www.native-instruments.com/en/products/komplete/synths/trk-01/