The official Pokémon movie blog has updated. Translations of the new entry follows:
Appear! Movie Details #6: Concept Art for "The Short's Setting" Appear!
Main StageBeast Road
This is the setting of the short "Pikachu and the Pokémon Musicians"!
What kind of tale will unfold here in the forest?
Source:
http://www.pokemon-movie.jp/pokemovie_ch/?p=537