One possibility is that Garmin bought the 480 to get the technology
(and the people) to TSO the 430/530 products, as well as to get the
WAAS knowledge. I can't possibly see Garmin moving forward (i.e. making
new products) with two very different interfaces. They need to continue
to have one "Garmin" look&feel. Since the G1000, and the new "mini
G1000" are totally 430 interface based, it would be hard to imagine
that some new product "G2000??" would be 480 based.

I would totally expect the 480 technology to be seen in future Garmin
products, but I would be surprised if it looked anything like the 480.

-Robert