I have never ever seen a pro level Fuji film come in 24 exposures. Is it an endemic format to the Japanese market?

A modernisation of old and tired box design is always welcome, and this was mentioned in a Retailer Briefing note in September 2012; this announcement merely confirms the plan.
A number of films in formats were discontinued from November 2012; what's left appears to be subject to a proposed 25% price rise (!).