The Rule 5 Draft coming up in a couple of weeks probably won't have results as exciting as last year's, mostly due to the fact that clubs can go without protecting players on their 40-man for an extra year. (This BA blog entry has some names that were added just in time.)
Here's a free Baseball America piece that explains it in detail.
There have also been/will be a few Baseball Prospectus pieces about the draft, but they're subscriber only. One by Bryan Smith talks about AFL players that will be exposed come draft day. A few of those names:
Sung Ki Jung, RHR, Braves
Mark Rosen, LHR, Diamondbacks
Raul Padron, C, Athletics
Dusty Hughes, LHS, Royals
Lincoln Holdzkom, RHR, Red Sox
Fernando Hernandez, RHR, White Sox
Steven Jackson, RHR, Yankees
Jarrett Grube, RHR, Rockies
Smith promises more pieces as well, so I'll link those when they come up. Carlos Guevara is the only Reds player mentioned as a real Rule 5 possibility so far.