Two sections are now out in LFR, the new one even has three beast bosses. While I don't expect any of them to be tameable (they are Boss level after all), there are also other things to check. Also, a number of things I'm going to list would be untameable due to level anyway, but it would still be great to know if they're flagged tameable, for the future.
Please post if you have any info to add or correct. Thank you

In the first raid section (of LFR):



Ancient Python
ID: 70448 Level: 90 Elite Location: after first boss Appearance: new python model, all three colours
Tameability Flag: NO

Amani Warbear
ID: 69177 Level: 92 Elite Location: spawns during Horridon fight Appearance: black troll war bear with purple&orange harness
Tameability Flag: NO


Sul'lithuz Stonegazer
ID: 69172 Level: 91 Elite Location: spawns during Horridon fight Appearance: old world basilisk, burgundy-orange with orange or orange-purple with purple crests.
Tameability Flag: NO
In the second raid section:

Tortos
ID: 67977 Level: ??? Elite Boss Location: first boss in Forgotten Depths Appearance: unique stone turtle
Tameability Flag: NO


Whirl Turtle
ID: 67966 Level: 93 Elite Location: spawn during Tortos fight Appearance: regular, non-elite, blue glowing dragon turtle
Tameability Flag: NO

Greater Cave Bat
ID: 69351 Level: 92 Elite Location: packs before Tortos Appearance: old style bat, brown
Tameability Flag: NO

Vampiric Cave Bat (1 of 2 IDs)
ID: 69352 Level: 92 Elite Location: packs before Tortos Appearance: old style bat, red
Tameability Flag: NO

Vampiric Cave Bat (2 of 2 IDs)
ID: 68497 Level: 93 Elite Location: spawn during Tortos fight Appearance: old style bat, red
Tameability Flag: NO

Shale Stalker
ID: 70587 Level: 92 Elite Location: Forgotten Depths area before Megaera Appearance: orange shale spider
Tameability Flag: NO

Cavern Burrower
ID: 70589 Level: 92 Elite Location: Forgotten Depths area before Megaera Appearance: gyreworm, orange
Tameability Flag: NO
Classified as a beast. I've reported this one so I suspect it will be changed to elemental

Bore Worm
ID: 68221 Level: 92 Elite Location: passages between Maegara and Ji-Kun Appearance: white old-style larva
Tameability Flag: NO

Corpse Spider
ID: 68248 Level: 92 Elite Location: passages between Maegara and Ji-Kun Appearance: brown bone spider
Tameability Flag: NO

Ji-Kun
ID: 69712 Level: ??? Elite Boss Location: last boss of second section Appearance: Thunder Isle bird model, orange-brown ("red")
Tameability Flag: NO

Nest Guardian
ID: 70134 Level: ?? Elite Location: Heroic-only Ji-Kun fight Appearance: Thunder Isle bird model, mustard yellow-brown ("green")
Tameability Flag: NO

Juvenile (1 of 2 IDs)
ID: 70095 Level: 92 Elite Location: spawns during Ji-Kun fight Appearance: Thunder Isle bird model, blue
Tameability Flag: NO

Juvenile (2 of 2 IDs)
ID: 69836 Level: 92 Elite Location: spawns during Ji-Kun fight Appearance: Thunder Isle bird model, blue
Tameability Flag: NO

Fledgling
ID: 68193 Level: 92 Elite Location: spawns during Ji-Kun fight, second stage after the baby Hatchlings Appearance: Thunder Isle young bird model (much like raven lord mount)
Tameability Flag: NO
Third raid section:

Muckbat
ID: 70232 Level: 90 Elite Location: Halls of Flesh-Shaping Appearance: old style bat, white
Tameability Flag: ???

Skittering Spiderling
ID: 70227 Level: 90 Elite Location: Halls of Flesh-Shaping Appearance: grey cave spider
Tameability Flag: ???
Fourth raid section:

Untrained Quilen
ID: 70206 Level: 90 Elite Location: Hall of Kings Appearance: red organic quilen
Tameability Flag: NO

Untrained Quilen
ID: 70209 Level: 90 Elite Location: Hall of Kings Appearance: grey organic quilen with copper mane
Tameability Flag: NO