I don't, sorry. But I have an Extreme to SGM2015 perspective, and other than uber honesty being an issue with some masterings needing a little more sugar in the presentation, the Extreme is a total game changer.
I believe Emile stated the Extreme Mini will not retail for much less than 2/3 of Extreme RRP. It will maintain the same complex engineered casework which makes up a significant part of the cost. It won't be a dumbed down design, will be Extreme minus some components.
Anyhow, this is OT for an Antipodes thread, and my knowledge, intimate or otherwise of servers, the Extreme etc, is purely limited to listening impressions.