I got flamed on the Leica Customer Forum for saying this, but apparently, and I have heard this from various sources, one of them being a Leica rep, that manufacturing encountered some issues and units sent to the states were sent back.
Thats all I know. I've heard many are using theirs successfully, and a couple have encountered backfocusing issues so maybe waiting is a good thing, for now.
Looking at your kit list, it doesn't look as if you're in a 'desperate need' for some fancy glass 😉