This kit was first announced and available for pre-order in July 2013.
The official announcement (translated from the Japanese) reads as follows:
"Thank you very much look forward for your continued support of our products patronage. Well, it had been expected to launch as a new product from us this time is "1/20 scale Grand Prix Series No.54 McLaren MP4 / 2 Monaco GP" is, but I will consider it as stop the release by various reasons.
The customer had been waiting for our release, that we apologize for any inconvenience, we apologize say, you would like to ask for your understanding."
[Release cancellation product]
1/20 scale Grand Prix Series No.54
"McLaren MP4 / 2 Monaco GP"
JAN Code: 4968728091716
Fujimi has had poor sales of their 1/20 F1 kits in 2012-2013 and a competitor has announced a similar 1/20 McLaren MP4/2 kit due in 2014 which would certainly erode sales for both companies.
The basic MP4/2 was used through the 1986 F1 season so we may yet see an MP4/2 b or c variant produced in the future.