This is all speculation, as I haven't seen anything officially posted from the Reds nor their affiliates, but this is how I see the organizational rosters shaping out for 2008:

Code:
   MLB			   AAA		   	   AA		   	   A+		   	   A		 	   Rk		 	   GCL
 C Dave Ross		Paul Bako		Craig Tatum		Anthony Esquer		Devin Mesoraco		Jordan Wideman		Frank Meade
1B Joey Votto		Andy Phillips		Tonys Gutierrez		Logan Parker		Mike McKennon		Eli Rimes		
2B Brandon Phillips	Andy Green		Chris Valaika		Justin Turner		Neftali Soto		Jose Gualdron		Jake Kahaulelio
3B Edwin Encarnacion	Adam Rosales		Michael Griffin		Juan Francisco		Brandon Waring		Carlos Mendez		Jamie Gianchou
SS Alex Gonzalez	Paul Janish		Jose Castro		Zach Cozart		Yen-Wen Kuo		Angel Cabrera		Mariekson Gregorius
LF Adam Dunn		Drew T. Anderson	Danny Dorn		Chris Heisey		Todd Frazier		Tony Brown		Donald Lutz
CF Ryan Freel		Chris Dickerson		Sean Henry		Drew Stubbs		Brandon Menchaca	Michael Jones		Angel Logrono
RF Ken Griffey, Jr.	Jay Bruce		Shaun Cumberland	Denis Phipps		Justin Reed		Brett Bartles		Jose Victor
 C Javier Valentin	Ryan Hanigan		Chris Kroski		Eddy Rodriguez		Jake Long		Jason Bour		Petr Cech
 C 			Alvin Colina								Chris Denove		Todd Waller		Mauro Schiavoni
1B Scott Hatteberg	Kevin Barker					Jason Louwsma								
2B Jeff Keppinger	Luis Bolivar		Michael DeJesus								Wayne Kendrick		
3B 						Bryan Bass		Eric Eymann		Ryan Baker		Brodie Pullen		
SS 									Justin Tordi		Kevyn Feiner					Radhames Moreta
IF Juan Castro		Jolbert Cabrera														Jefry Sierra
OF Norris Hopper				Cody Strait		Yuber Rodriguez		Keltavious Jones	Jose Bastardo		
OF 						B.J. Szymanski		Carson Kainer		Kyle Maunus		Alexis Oliveras		
OF 						Josh Holden		Gerardo Cabrera								
UT 			Jerry Gil		Drew M. Anderson										

SP Aaron Harang		Homer Bailey		Carlos Fisher		Travis Wood		Kyle Lotzkar		Drew Bowman		Luca Panerati
SP Bronson Arroyo	Johnny Cueto		Daryl Thompson		Sean Watson		Evan Hildebrandt	Brandon Rice		Matteo Pizziconi
SP Matt Belisle		Matt Maloney		James Avery		Alex Smit		Tzu-Kai Chiu		Efrain Rodriguez	Stalin Gerson
SP Edinson Volquez	Richie Gardner		Sam Lecure		Rafael Gonzalez		Scott Carroll		Harris Honeycutt	Porfirio Martinez
SP Josh Fogg		Adam Pettyjohn		Ben Jukich		Jordan Smith		Enerio Del Rosario	Jon Conatser		Marcos Molina
SP 			Tom Shearn		Camilo Vazquez		Daniel Guerrero		Juan Rafael		Jose Marizan		Jose Siri
SP 			Dave Gassner											
SP 			Bobby Livingston										
RP Francisco Cordero	Bill Bray		Josh Roenicke		Derrik Lutz		Josh Ravin		Charles Snowden		Jeremy Vinyard
RP Dave Weathers	Marcus McBeth		Pedro Viola		Lee Tabor		Jeremy Horst		Dan Zeffiro		Victor Navarro
RP Mike Stanton		Gary Majewski		Justin James		Misael DeJesus		Matt Klinker		Jordan Hotchkiss	Tom Fiebig
RP Todd Coffey		Jon Coutlangus		Ramon Ramirez		Ramon Geronimo		Dan Donaldson		Aguido Gonzalez		Ricky Rhodes
RP Jared Burton		Ty Pelland		Danny Ray Herrera	Phil Valiquette		Steve Otterness		Josh Beal		Curtis Partch
RP Jeremy Affeldt	Brad Salmon		Robert Manuel		Luis Montano		Joe Krebs		Ray Jeffords		Leonardo Astorga
RP Sergio Valenzuela	Kent Mercker		Logan Ondrusek		Kevin Gunter		Jamie Arneson		Scott Gaffney		
RP 			Jon Adkins		Justin Mallett		James Morris		Jacob Ociesa		Anthony Romero		
RP 			Jim Brower		Dan Denham		Terrell Young		Tyler Rhoden		Jose Medina		
RP 			Chris Michalak		Brock Till								
RP 			Mike Lincoln											
RP 			Scott Sauerbeck											
RP 			Justin Lehr											
RP 			Ricky Stone