No specific info about version 0.5. Please visit the main page of Spotify on Mac Informer.
My daughter recommended Spotify and I love it
Download and convert tracks, playlists, albums, podcasts and radio from Spotify.
Losslessly converting Spotify tracks to MP3, AAC, FLAC, WAV, ALAC or AIFF.
Displays slide shows from public and private Picasa Web Albums.
This script will allow you to set the Album Rating or Album Loved for albums.
DKVBrowser is an application that can be used instead of the PDA (PRC-100).
My daughter recommended Spotify and I love it