I just heard back from Audio Insider.  They say the container with M200MkII's (which is what I'm currently aiming for) should be about ready to leave Swan for a mid-October arrival in the warehouse and that a website announcement should be forthcoming.  Hopefully the same goes for the M50W.  

Same as missileman, I haven't heard anything.  

Thanks for the update.  I also received a similar response from TAI shortly after my last post.  

Did either of you ever locate a source to buy the m50w?  I'm interested as well, but it appears they are still out of stock.  I wonder what the problem is.  

So, how do you like the e10?  I just got a pair of K240s and I'm finding that they have a much higher noise floor coming from my LD mkiii than do my HD600s.  I'm thinking maybe I need an amp better suited for these lower impedance phones.