I found the one I just received used and be offered in the trading post of another forum. After researching a bit and finding out that a bunch of folks mod these with the help of the products designer in some cases, I did see a post in which he (Gary Hueng) says they are working on MKII like skylab mentioned and it is tenatively coming out in March. Another gentleman posted that after contacting MP he was told the release date of March also and a rough estimate of around $ 250.00 for each unit. After owning an original version for 5 days and playing it continuously during that time and only tweaking it with one of the simpler mods...it just gets better and better..easily worth more than its retail price point in my opinion. My intention was to use this amp for headphones only but have been driving my mains with it and really enjoying the sound.
When it popped up for sale, I came here and read skylabs review and then bought it based on that review as my only resource....worked out well, very well in fact.