How does one buy the latest hardware release.

[jebem]

This subject was discussed here in another thread here.

If my memory serves me well, basically the NW280AA were the initial production batches (hardware rev.A) that do not support wifi connectivity among other missing features present on the successor G8X92AA series (hardware rev.C) .

The G8X92AA series have at least two known editions, one with the original keyboard color schema used in the NW280AA series, and a new color schema explained in the above link.

Apparently the only way to distinguish between the two G8X92AA editions is to look at it in a shop.
Although the later blister packages comes with a cutout through the plastic above the USB port, but I don't know if this detail is a unique feature of the later editions.