Riv is not killing the Atlantis, though they are killing the Bleriot. The Atlantis is their best-seller.
According to GP, the Bleriot was inappropriately marketed as "if you can't afford a Riv, get a Bleriot", which he felt was unfair.
Apparently, there is going to be an expansion of the Taiwanese bike range. The "Sam Hill" is one of them and probably a Quickbeam-esque model as well. Made in Taiwan, paint not as fancy, should keep the price down.