Quote from FB - https://www.facebook.com/armstrongpowerhouse/ "Mk3A-B Coach Enhancement Pack becomes Mk3A-B Coach Pack With Dovetail Games' kind agreement, everything you need for our enhanced Mk3a/b coaches will now be included in our pack. This means you will not need any other packs (requirements) for our pack to work. To avoid any confusion and to reflect the fact it is now a self-contained rolling stock pack, we will be marketing this pack as simply the Mk3A-B Coach Pack. We hope for this to be just the start of collaborating with Dovetail Games to bring you the best possible content for Train Simulator Classic."
I remember saying last year, that AP should collaborate more closely with DTG, and everyone thought it was a terrible idea that would never happen (shrug).
Hopefully this will mean we can get some DTG made rolling stock brought up to AP standard straight out the box.
Hopefully AP might help DTG with the Sounds in TS Classic. Could be why a number of AP Sound packs have been removed from sale?