From EussNL: PS4 to be released 2.000.000 using newer Webkit 537.73: Mozilla/5.0 (PlayStation 4 2.00) AppleWebKit/537.73 (KHTML like Gecko)
PSVita to be released 3.200.000 still using old Webkit 536.26: Mozilla/5.0 (PlayStation Vita 3.20) AppleWebKit/536.26 (KHTML, like Gecko) Silk/3.2
No newer PS3 FW or newer Webkit seen than 4.600.000: Mozilla/5.0 (PLAYSTATION 3 4.60) AppleWebKit/531.22.8 (KHTML, like Gecko)
It is more plausible to be 2.00 and not 1.80.
From ICECOLDKILLAH: the second one is for sure a fake, already proven on reddit, here's the complete album: imgur.com/a/hwcPD#0
On pic 3 you can see the RP rating logo on killzone in the folder
From IWorkForSony (via reddit.com/r/PS4/comments/2d49zq/complete_album_of_rumoured_new_ui_for_ps4/cjm2i78): These are all fake.
Finally, it appears the alleged PS4 Firmware 1.80 / 2.00 pictures are indeed fake according to the Sony insider who has been correct several times in the past on verifying similar PlayStation 4 related leaks.