The 586 is actually still in production but it isn't on the website. Larger dealers will have them or can get them.
Other than that, you need to buy the old ones! That's what I do anyway since I refuse to play the game and buy a gun with a hole in the sideplate. Lots of 27's and 28's out there. Not to mention the classic 19. I just bought a "new" 19-3 recently and the quality and blue job is simply outstanding.
Gregg