[sf-lug] Are there two different models of X1 Carbon 4th gen (upgradeable and non-upgradeable)?

[Rick Moen]

Quoting Antonio Malcolm (antonio.malcolm at gmail.com):

> Was it offlist?
> sf-lug at linuxmafia.com is in the recipients list.

I didn't get a copy, and
http://linuxmafia.com/pipermail/sf-lug/2016q4/date.html doesn't have it.