1/144 Morser Karl mit Railway Transport Carrier (Set of 2) - Mini Armor Series - Dragon
Another reissue from Dragon in their Mini Armor Series.
Two options included for the barrel size (54cm & 60cm).
The box artwork implies that there are two kits in this box, which is probably one too many :)
If you want one of these, there are plenty on ebay for less.
Release Date : February 2020
Price: 43 USD
https://www.1999.co.jp/eng/10671531
This interesting site is dedicated to Morser Karl Kist (inc 1/144) from the various kit manufacturers,it has photos of sprues and assembled models and includes suggestions for the necessary corrections.
http://karl.geraet040.net/karl_shape-eng.html