In addition to the major 4.0 improvements and 4.1 features, this update includes:
- Added support for new INSTEON In-LineLinc Relay (dual-band, 1800 watt capacity).
Indigo 5.0 has been released, so support for Indigo 4.1 will end on 7/31/2012. It is a paid upgrade, but upgrade discounts are available.