Aesthetix Callisto and Io Eclipse

Can anyone who has heard the new units describe the sonic differences between the current Callisto and Io Signature MkII versions and the new Eclipse versions? Also, other than the use of the new capacitors, what has changed to improve these units? As an Io Signature MkII with two power supply chassis owner, I want to learn about potential improvements and associated cost.

I called Musical Surroundings last week and they assured me that the current versions of the Io and Callisto could be upgraded to the new Eclipse series. The man with whom I spoke said that Aesthetix would publish pricing as early as this coming week and that dealers would receive notice.