No info about availability.
5-Channel Routing Bus
The Bus5 introduces a new concept into the Eurorack modular synthesizer: the expandable routing bus. It provides 5 passive signal busses that can handle both audio and CV signals. Using standard 10-way IDC ribbon cable multiple Bus5s can be placed anywhere in your Eurorack system.
The minimal rack depth of only 29mm (excluding bus headers) ensures the Bus5 can be used in the shallowest of systems. And being entirely passive there is no need to quote power consumption figures!