more details below..
First of all, BFK is back in line, now is called Arches BFK Rives. New BFK Rives has white and extra white version. Naturally, Arches Aquarelle Rag will be there too. Finally, a new Arches paper be brought in Canson Infinity line. Arches 88 is a ultra smooth cotton paper, just like traditional Arches 88 screen printing paper. All these papers use mould-made 100% cotton paper without any optical brighteners.
New CI Arches inkjet papers will be released in 2021. According to the source, it's authentic Arches papers and has an unique and innovative inkjet receiving layer. Hope we can see these papers soon.