I bought the Vintage pack. On my HD500X I now have the following amps displayed after "Flip Top":
Small Tweed
Jazz Rivet
Mandarin 80
A30 Fawn Brt
A30 Fawn Nml
Black Panel Pete
The next one listed is "BF Double Nrm Pre"
However in the Edit program on my computer, "Acoustic" is listed right after "Black Panel Pete", but when I select it, my HD500X gets "Hiway 100 Pre".