I'm not sure if all of these have been confirmed, but here's a list of 43 of the 52 comics:
1. JLA#1 by Geoff Johns and Jim Lee
2. Action Comics #1 by Grant Morrison and Rags Morales
3. Superman #1 by George Pérez
4. Superboy #1 by Scott Lobdell and…
5. Batman #1 by Scott Snyder and Greg Capullo.
6. Detective Comics #1 by Tony Daniel
7. Batgirl #1 by Gail Simone, Ardian Syaf and Vicente Cifuentes.
8. Batwoman #1 by J.H. Williams III, Haden Blackman and Amy Reeder
9. Catwoman #1 by Judd Winick and Guillem March
10. Red Hood And The Outlaws #1 by Scott Lobdell and Kenneth Rocafort
11. Batwing #1 by Judd Winick and Ben Oliver
12. Nightwing #1 by Kyle Higgins and Eddy Barrows
13. Batman And Robin #1 by Peter Tomasi and Patrick Gleason
14. Adventure Comics DC Universe Presents #1 by Paul Jenkins and Bernard Chang
15. Green Lantern #1 by Geoff Johns, Doug Mahnke and Christian Alamy.
16. Green Lantern Corps #1 by Peter J. Tomasi, Fernando Pasarin and Scott Hanna
17. Green Lanterns: New Guardians #1 by Tony Bedard, Tyler Kirkham and Batt.
18. Red Lanterns #1 by Peter Milligan, Ed Benes and Rob Hunter.
19. Animal Man #1 by Jeff Lemire and…
20. Swamp Thing #1 by Scott Snyder and Yanick Paquette
21. Legion Lost #1 by … and Chris Batista?
22. Birds Of Prey #1 by Duane Swierczynski and Jesus Saiz
23. Teen Titans #1 by Fabian Nicieza Scott Lobdell, Brett Booth and Norm Rapmund
24. Savage Hawkman #1 by James Robinson Tony Daniel and Philip Tan
25. My Greatest Adventure #1 by Kevin Macguire and Aaron Lopresti (possibly for October)
26. Supergirl #1 by Brian Wood
27. Wonder Woman #1 by Brian Azzarello #1 and Cliff Chiang
28. Fury Of Firestorm #1 by Brian Clevinger Gail Simone, Ethan Van Sciver and Yildiray Cinar.
29. Aquaman #1 by Geoff Johns and Ivan Reis
30. Mr Terrific #1 by Eric Wallace and Roger Robinson
31. Flash #1 by Brian Buccellato and Francis Manapul
32. Green Arrow #1 by JT Krul and Dan Jurgens
33. Justice League International #1 by Dan Jurgens and Aaron Lopresti
34. Captain Atom #1 by JT Krul and Freddie Williams II
35. Grifter #1
36. Unnamed Legion book by … and Chris Batista?
37. OMAC #1 by Dan DiDio and Keith Giffen
38. Batman: The Dark Knight #1 by David Finch
39. Vigilante #1 by Darwyn Cooke?
40. Justice Society of America #1
41. Justice League Dark #1 by Peter Milligan and…
42. Demon Knights #1 by Paul Cornell and…
43. Frankenstein: Agent Of SHADE #1 by Jeff Lemire and…
Reading this list, one thing really stands out to me: We've got 4 Superman related titles, 10 or 11 Batman ones (if Birds of Prey counts), 4 GL books, and 4 Justice League/Society series. That's about half of the announced titles just in those four concepts. And I wouldn't be surprised if 4 or 5 of the remaining 9 series are related to Superman.
EDIT: Some more titles...
44. Resurrection Man #1 by Dan Abnett and Andy Lanning with art by Fernando Dagnino.
45. I, Vampire #1 will be by Josh Fialkov and artist Andrea Sorrentino.
46. Voodoo #1 by Ron Marz with art by Sami Basri