Train Line announced a revision of their Harz “Mallet” steam locomotive. The Mallet has been improved in several areas with more detail on the boiler and on the water tanks. The photos below show a comparison between the old (top) and new (bottom) version of the loco from both sides.
The new Mallet is included in Train Line’s new HSB sets. The #2011401 set includes the 99 5901-6 Mallet (analogue) and two 7-window passenger cars in a “Hasseröder” paint scheme. The #2011412 set is the same, but the Mallet is equipped with a digital ZIMO sound decoder.
I’m not sure if the new version of the Mallet will also be available separately, Train Line does not mention anything about it on their website.