Here is a list of officially announced PS4 games:

First Party

• Drive Club
• Killzone: Shadow Fall
• inFamous: Second Son
• Knack

Where's The Witness?

Oh yeah forgot that one. Gonna add that right now.

Where's The Witcher 3?

You can add Destiny and Chimera 2

Edit : Also Hohokum and doki doki universe 

source : http://www.destructoid.com/a-trio-of-indie-games-announced-for-the-ps3-ps4-vita-253304.phtml

An official list : http://www.thesixthaxis.com/2013/03/26/sony-lists-25-new-indie-games-for-ps-vita-ps3-and-ps4-removes-concept-approval/

• Blacklight: Retribution – PS4
• Primal Carnage: Genesis – PS4
• A Virus Named Tom – PlayStation Mobile
• Beatdown in Treachery City – PlayStation Mobile
• Crumble – PlayStation Mobile
• Crystallon – PlayStation Mobile
• Don’t Wake the Bear – PlayStation Mobile
• Hermit Crab in Space! – PlayStation Mobile
• Oh, Deer! – PlayStation Mobile
• Rymndkapsel – PlayStation Mobile
• Ten By Eight – PlayStation Mobile

Here is a list from neogaf:

1. Assassin's Creed 4: Black Flag
2. Battlefield 4
3. Blacklight: Retribution
4. Call of Duty: Ghosts
5. Carmageddon: Reincarnation
6. Cyberpunk 2077
7. Deep Down
8. Destiny
9. Diablo III
10. Doki-Doki Universe
11. DriveClub
12. FIFA 2014
13. Hokokum
14. Infamous: Second Son
15. Killzone: Shadow Fall
16. Knack
17. Lords of the Fallen
18. Primal Carnage: Genesis
19. Pro Evolution Soccer 2014
20. Rocketbirds 2: Evolution
21. Silent Enemy
22. Sniper Elite 3
23. The Evil Within
24. The Pinball Arcade
25. The Walking Dead: Season 2
26. The Witcher 3: Wild Hunt
27. The Witness
28. Thief
29. War Thunder
30. Watch Dogs
31. Wolfenstein: The New Order

you forgot thief as well

Thank you for keeping the list realistic.

no "unconfirmed this" and "unannounced IP that". Thank you.

I hope those F2P games end up being good.