I did see some people posting about this and wondering if it was a hint, trying to rack my brains and figure it out.
18 posters would suggest 18 songs, which is credible given the shorter average song length for these albums.
I did notice the exclusion of FOTD.
Maiden Japan also seemed to be referenced in the tour art, with the Japanese towers in the background.
Could it be something like:
1st song from the album on the first poster
2nd song from the album on the second poster
etc
But determining a proper order is hard with posters in the middle etc.
And of course none of these albums go up to 18 songs, so there's something else to it.
The graphic on the Mobile Store has 2 posters changed out:
RFYL is swapped for The Trooper
TFPT is swapped for Live After Death
I expect if this is a setlist tease then figuring out those two will help with the rest.
