For those longing for a nice look inside the near unobtainable Rockman DASH 2 Special Selection art book (released only in Japan in limited quantities last fall), Mega Man Legends Station has you covered. Forumgoer Emeltee has scanned the book's contents in it entirety, and has graciously put it up for public download here.
The book is loaded with official and conceptual art from DASH 2, including several pieces featuring unused characters, enemies and weapons. There's even art for some unused Roll vehicles like a jet pack and a motorcycle (pictured). Why these didn't make it into the final game are beyond me, but they sure are awesome.
Snag a download at the above links.
On an unrelated note, I thought I'd touch on the subject of the World Hobby Fair considering many of you want to know what's going down. Simply put, there's been no announcements. Absolutely nothing. With only one day left, there's still a chance something might come up but, honestly, I wouldn't get your hopes up. I'll keep you posted.