IGN has posted up a preview for Mega Man Zero Collection and while it pretty much covers everything we've known for quite some time, it does include some spiffy new screenshots.
The article goes on to confirm that the bottom screen will primarily be used to display relevant artwork during gameplay:
"Because these are all GBA games, the bottom screen goes completely unused. It shows some nice artwork wallpaper of the game's characters, though. And the wallpaper changes as you progress through the game. Each new one you see gets unlocked to a gallery that you can browse later."
For more details, read the full report here. Thanks, Klavier Gavin.