…in any form since its introduction in 1977, but I am not sure that it will succeed!
Once produced by Lima, the last record of ‘HO’ scale B5 coach production I can find is in 2009 sold under the Rivarossi label catalogue number HR4083 and HR4095 – finished in the latest silver/red livery but in unrefurbished condition (pre the 2010-2012 refurbishment programme).
NSB modellers can obtain B3-series stock (Roco) and B7-series too alongside many older coach designs such as the BF10 and AB11-series (NMJ) but there’s a big gap in the market which is the B5. Now, NSB contracted the modern refurbishment of B5s to Bombardier, undertaken between 2010 and 2012 resulting in some changes to the stock to bring it up to the standards required for a modernised railway. The current format is slightly different compared to the old Lima tooling, but outwardly, the coaches are the same. I suspect many NSB modellers interested in NSB Regiontog over the last six to eight years will ignore the differences if the silver/red livery is correctly applied as was the case with the 2009 release by Hornby under the Rivarossi label.
NSB modellers of all eras since the introduction of the B5 in 1977-81 would be very grateful, in fact delighted, if Hornby International pulled its finger out and re-issued the model in the appropriate liveries – in NSB red and the silver/red scheme – hopefully the tools are okay!
So Hornby, how about it? It’s an attractive coach design and one that is keenly missed in the Norwegian modelling community. For a picture of the Rivarossi release see here: https://www.modellbahnshop-lippe.com/productzoom/Rivarossi/11-4-001003-37610-0-0-0-34-5-2-0-gatt-it-p-0/productzoom.html
Of course, we do have the traction in ‘HO’ thanks to the Roco EL18 (above) and NMJ EL17…