Audiofier describes AetherArp as a 4 Sound Engines and Cloud Arpeggiator library for Kontakt 5.8.1 which creates evolving soundscapes, overtime mutating sounds, and ethereal/out-wordly moods that add movement and unpredictability to your ambient productions and filmscores.
Requires NI Kontakt 5.8.1 (r43), AetherArp does not work with Kontakt Player.
Pricing and Availability:
2hp seem to keep packing a load of features into their tiny little modules
Two (well, three) new products from Verbos