VCA

Roland is also pleased to announce the development of the SYSTEM-500, an all-new, fully analog modular synthesizer based on two of the most revered electronic instruments of all time—the SYSTEM-700 and SYSTEM-100m. Designed exclusively for Eurorack, the SYSTEM-500 delivers classic Roland sound with all the advantages and reliability of a modern instrument.
Coming Q3 2015!

http://www.roland.com/aira/airamodular/

• ? mA +12V
• ? mA -12V
• ? mA 5V

No info about availability.