Right, I'm going to cover the talons of the emperor in 3 parts. general army rules, then custodes units, and finally sisters units.
so army wider stuff.
preternatural skill, the sodality, and inviolable psyche are unchanged from their WD rules.
custodian armour doesn't give an invuln save, but all units have refractor field so meh.
praesidum shield confers a rerolll to invuln saves (against shooting and in combat), but doesn't give a 4+ anymore, just a -1 to hit them while in combat.
custodes terminator armour
2+/4++, relentless, can't run but can overwatch and sweeping advance
all custodes infantry can by teleportation transponders
Vexilla can be taken 1 per squad, confers fear, reroll failed leadership tests, and +1 to combat resolution to all friendly units within 12" (doesn't stack for multiples)
new wargear option called "arae-shrikes" any enemy unit attempting to deepstrike within 12" of a model with one of these (before scatter) must roll a d6, on a 4+ it suffers a mishap, even if it has rules otherwise (internal guidance systems etc). also causes barrage weapons fired against the squad to roll 3d6 scatter taking the highest.
guardian spear has 3 versions, plain, melta and Adrathic
custodes can have paragon spear (paragon blade meets guardian spear)
cusodes have access to solarite power gaunlets and talons (what imperial fists have, with a lightning claw version)
Adrathic weapons are a set of guns
str5-6 ap, instant death, armourbane, gets hot
adrastus bolt caliver (what the new 'bolter' guys have on the cover)
two versions
30" range heavy bolter, or a disintegration beam which is 12" str5 ap2 instant death, armourbane, gets hot. not a combi-weapon
the arachus blaze cannon has two profiles
burst fire 36" str6 ap5 3shots
concemtrated 48" str8 ap1 1shot, exoshock
sisters of silence
two levels of psychic nulling, best bits reserved for elites and HQs won't go into it here, too much.
all sisters are fearless and have hatred (psykers)
all sisters belong to a cadre, all sisters in a detachment are from the same cadre, gain one of the follow (your pick)
-infilrate
-crusader
-stealth
-overawe (+1 to combat resolution)
execution blade is only ap3, but has duelists edge (+1i in challenges) and is ap2 on rolls to hit of 5 or 6.
have access to needle pistols and an assault2 gun version
talons of the emperor part 2: custodes units
just putting it here squads are all 3-10 men unless stated otherwise.
HQ
shield captain,
standard captain type, full access to armoury, can be upgraded to tribune giving fearless and eternal warrior, may also pick warlord trait.
Valdor
kicks ass as expected.
tons of special rules including but not limited to: eternal warrior, crusader and fearless, his spear is ap2 basic with +1/+2str
bolter rounds in his spear is str5 ap2 concussive
his spear also inflicts instant death on a +4 roll to wound, all successful invuln saves must be rerolled (instant death or not)
gives all custodes get free teleport transponders,and can reroll steal the initiative.
ELITES
hetaron guard squad
basically veterans, 3 attacks base, can mix and match practically any wargear options available to 'infantry' custodes. also have crusader and counterattack.
Aquilon terminators
lastrum storm bolters (storm bolters with heliothermatic rounds) and solarite gaulnets/talons for base. may swap bolters for firepikes (str6 ap6 torrent)
contemptor-achillus
twin lastrum bolters on wrists, refractor field, standard contemptor bar str8 and side 13. can take a spear which is mastercrafted, and which any to hit rolls of a 6, on the turn it charges are strD.
TROOPS
guardian squad
spear guys, can mix and match the three different spears, 1 can take a vexilla
sentinel guard squad (now troops)
shield barracade confers a 4+ cover save not defensive grenades
may swap swords for solarite gaunlets or talons for price.
DEDICATED TRANSPORT
Coronus
troop capacity 12 (so 6 custodes)
12,12,11,hp4
flare shield and machine spirit
FAST ATTACK
jetbike squad
3-6 models, spilt fire, sweeping fire (allows them to fire each of their weapons)
jetbike has a ilastus bolt cannon built in, can be upgraded
fancy power lance
Pallas grav-attack
12,11,11,hp2
flare shield and machine spirit, in squads of 1-3
HEAVY SUPPORT
Sagittarum squad
custodes with 'bolters' guns stats back in other post about armoury. nasty as hell.
Caladius, as on PDF rules, but can upgrade turret to new weapon (heavy blaze cannon)
contemptor-galatus
same as other dreadnought, but with the sword and shield.
shield confers a reroll to his invuln against all attacks against his front arc (and all close combat attacks)
sword is X2str, ap2 shred, rampage, flamer is basically a str6 heavy flamer.
and that ladies and gents is the custodes army list. next onto the sisters of silence....