When I say 2nd generation...
Lanier received a new shipment of the 120 size Edge at the end of August. This new shipment has improvements Lanier has incorporated as a response to customer feedback. Since my LHS is only 20 miles from the Lanier factory, I got one of the first units distributed from this new shipment. In the pictures you can see the modification to the LG mount and the change in the LG type.

Otter,
The new LG is much taller than the first edition (7 3/4 ") due to the recess. Moose does not offer a LG the correct size. Also, with the Edge being characteristically tail heavy, I am not sure I want to remove weight forward of the CG yet. I'll know more when I do final balance checks.
I called APC, and they do not offer a 1" OD carbon fiber wing tube.The closest they have is about .83 inches. I think the fit would be too loose. Someone said Cactus Aviation has a 1" wing tube, although not advertised on their site. I will call them Monday.

The LG cover is supposed to be installed with clear tape after cutting exit slots for the LG. I will use clear UltraCote. Although in the picture the edges look like styrofoam, the cover IS fiberglass .