Here is what their recent Facebook post says:
And this is a machine translation of the above:
I really have to do a hard hearted announcement. Starting today February 1st we will temporarily suspend new orders for long-sharpened fountain pens and fine sharpening fountain pens (We will resume ordering around June 2018).
■ Notice of temporary suspension of orders for "Sailor's original pen tip" product (PDF)
(Long-blade sharpening fountain pen and fine sharpening fountain pen)"
Seems like they are talking about Naginata togi and saibi togi nibs, eh? Hope all is well with Mr. Y. Nagahara.