The Panasonic Leica DG Elmarit 200mm F2.8 is a fast telephoto lens that is equivalent to 400mm when mounted on a Micro Four Thirds body. (An included 1.4x teleconverter increases the equivalent focal range to 800mm.)

The lens probably only had a single production run. It was the single most expensive lens in the Pana Leica lens collection, retailing for a whooping USD 3000. It probably was a slow seller despite the premium optical quality.

Praise for the 200 mm:

While we are at it these lenses have also been discontinued in the past:

H-FSA45200
H-FS14140-KA / H-FS14140 (none splash proof design of the super zoom)
H-FS1442A-KA / H-FS1442A

The first one is perhaps better served by the Pana Leica 50-200 (at a premium price point).

The 14-42 kit lens is replaced by the 12-60 kit lens.