The Edge was released in March of last year, so it's obvious that it's about to be replaced. Also note the recent deals on the VisorPrism, I think it's quite likely we'll see a new slim, full function, possibly color, Visor in the near future. Though communicator's like the Treo (which I own) are clearly the future of the company.
The speculation that Handspring is getting out of the Visor-style full function PDA biz is based on comments made by Jeff Hawkins regarding HandSpring's long term plans, this was misinterpreted by some to mean that they were cancelling the visor line, like, tomorrow, but in actuality, it's likely we'll see full-fledged visors for the next three-to-five years.
http://news.com.com/2100-1040-820416.html
hope this clears that up,
ciao,
michael