I checked the Artech website today and there are MkII versions of the Gyro SE and Orbe as well as the QC supply. They did not give any info as to the improvements but the price of the Gyro SE MkII has increased by $200. I would be interested to know what is going on. Michell generally offers upgrade kits whenever they make improvements. Also, Music Direct is selling the QC supply Mk I for $750 which is $150 off. Still rather pricey to me but getting into the realm of reason.