Good Morning 765mchone
We have no plans to update the NKP High Speed Freight Pack further at this time, unless a major update is required.
Yesterday's update includes several improvements, including a custom whistle and bell sound (provided by Steve Lerro of K&L Trainz), and a new enginesound sourced from the DLS (by wva-usa), as well as improvements to smoke effects (including animated cylinder drain effects operated by pressing alt+D on your keyboard
), and of course the fix for the caboose textures.
A run yesterday, for me, had the whistle still being quite clear from quite a distance (about 200m from the loco - this was working hard at about 35MPH - had quite a load behind it!). The bell is relatively quiet, as it should be at a reasonable distance. Whistles are a very subjective thing, and the actual sound will vary depending on how the whistle is 'played' by the driver and the boiler pressure at the time. As such, this is something that, no matter which sound we use, it will not please everyone.
Regards