Riich.Models has sent the following in about another new release:
Ordnance QF 6 pdr Mk IV Anti-Tank Gun + Mk 1a Carriage, kit #RV35018.
To go with the 6 pdr, they're also releasing an ammunition set:
M1 & 6 PR 7 CWT(BR) Ammunition Set, kit #RE30009.
Both kits are due out in March. Thanks to Rubin at Riich.Models for the update.