I don't have a good PC to play them now anyways :P I'm most interested in getting DayZ if possible more than Arma. 

FULL LIST, from Dtoid, they recieved on a press release:
Japan:

ACQUIRE Corp.
ARC SYSTEM WORKS CO.,LTD.
ARTDINK CORPORATION
ASCII MEDIA WORKS Inc.
Bethesda Softworks, LLC
CAPCOM
Chara-Ani Corporation
CRAFTS & MEISTER CO.,LTD.
CyberConnect2 Co.,Ltd.
D3 PUBLISHER Inc.
Dimps Corporation
Electronic Arts Inc.
FromSoftware, Inc.
GANBARION Co., Ltd.
Genki Co., Ltd.
Granzella Inc.
GRASSHOPPER MANUFACTURE INC.
GungHo Online Entertainment, Inc.
GUST CO.,LTD.
IDEA FACTORY Co., Ltd.
IMAGEEPOCH INC.
Index Corp.（ATLUS)
KADOKAWA GAMES,LTD.
KADOKAWA SHOTEN CO., LTD.
Konami Digital Entertainment Co., Ltd.
LEVEL-5 Inc.
MAGES. Inc.
MarvelousAQL Inc.
NAMCO BANDAI Games Inc.
NAMCO BANDAI Studios Inc.
NIHON FALCOM CORPORATION
Nippon Ichi Software, Inc.
O-TWO inc. (peakvox)
PlatinumGames Inc.
SEGA Corporation
SPIKE CHUNSOFT Co.,Ltd.
SQUARE ENIX Co., Ltd.
SystemSoft Alpha Corp.
TECMO KOEI GAMES Co.,Ltd.
TOSE CO., LTD.
tri-Ace Inc.
Ubisoft Entertainment
WILL CO., LTD
XING Inc.
YUKE'S Co.,Ltd.

Asia:

BLUESIDE Inc.
Ratloop Asia Pte Ltd
Red Hare Studios
XPEC Entertainment Inc.

North America:

17-Bit
5th Cell Media LLC
Activision Publishing, Inc.
Armature Studios
Behaviour Interactive
Bethesda Softworks, LLC
Blind Squirrel Games®
Certain Affinity, Inc.
Darkside Game Studios, Inc.
Devolver Digital
©Disney
Double Fine Productions, Inc.
Double Helix Games
DrinkBox Studios Inc.
Edge of Reality, Inc.
Electronic Arts Inc.
FarSight Studios
Gaijin Games, Inc.
Gearbox Software
HB Studios Multimedia
Heavy Iron Studios, Inc.
High Voltage Software, Inc.
inXile Entertainment Inc.
Iron Galaxy Studios, LLC
JETPACK Interactive Entertainment Ltd.
Klei Entertainment Inc.
Lab Zero, Inc
LucasArts, a Lucasfilm Ltd. company
Metanet Software Inc
Minority Media Iinc.
Nicalis, Inc
Panic Button, LLC
Psyonix Studios, Inc.
Slant Six Games
Sony Online Entertainment LLC
Spark Unlimited
Spry Fox LLC
SuperVillain Studios
Take-Two Interactive Software, Inc.
Telltale, Inc.
Tribute Games Inc.
Turtle Rock Studios, Inc.
Ubisoft Entertainment
vBlank Entertainment Inc.
Warner Bros. Interactive Entertainment, Inc.
WayForward Technologies, Inc.
Zombie Studios, LLC

Europe and PAL:

4A Games
505 Games
Abstraction
Beatshapers
Big Ant
Big Bit
BitComposer
Bloober Team S.A.
Boss Alien
Bugbear
Cauldron
City Interactive
Criterion Games
Croteam
Curve Studios
Dakko Dakko Ltd
Deck 13
Double Eleven
Eko Software
FatShark
Flying Wildhog
Four Door Lemon
Frozenbyte
FuturLab
Gaijin
GHOST GAMES - AN EA STUDIO
Green Hill Studios
Kalyspo Media
Laughing Jackal
Ludosity
Mediatonic
Milestone
Mojang
Onmi Systems
Prodigy Design
Ripstone
Roll7
Ronimo
Rovio
Shortround
Sperasoft
Sproing
Stormbasic
Straight Right
Targem
Tate
Techland
Tonika
Torus Games
Vector Cell
Virtual Toys
Vlambeer
Wizarbox


Read more at http://www.destructoid.com/these-are-just-some-of-the-third-parties-working-with-ps4-246155.phtml#IBcyyg5YrjPl2Slf.99

The thing is, these games need keyboard way too much, there is so many buttons to press, I can see DayZ being simplified and "Dumbed down", but not Arma 3 , especially for vehicles 

Watched some gameplay videos/streams of DayZ. Didn't strike me as a very complex type of game. Maybe the devs can use the track pad? Blizzard was praising that and the move-bar thing

More than two hundred developers, maybe 100 games at launhc, that would be something...
Also, CDPROJECT, so, no more Witcher exclusive to Xbox.

No surprises on that publishers list except maybe Platinum games.

I see Atlus.

i think that is pretty normal, some big ones, some who will maybe only make small indie games and some who are between that and will make games only for japan or so.

Even if many of these devs have made games for Sony consoles in the past, or may go multi-platform, here's what a list of confirmed PS4 developers does:

It dispels any rumors of third parties jumping ship from Sony or the new console.

It sets people at ease that there will be a quality, extensive third party game library from developers we already know and trust.

It tells people that there will be immediate or very quick support of the new console, rather than waiting years for developers to move away from the old console such as with PS2 to PS3.

A list like this is very reassuring. Now all we need to see are the projects they are all working on.

Where the fuck is Valve?