Here's my codex update I typed this up a long time ago.
     
(Stuart's)
New wargear/weapons:
Shadow Grenades  8 pts
Dark Blade              25 pts
Warp Pistol             12 pts
Warp rifle              18 pts
Hypnosis grenades       10 pts
Razor Rifle             15 pts

New vehicle upgrades
Warp Cannon             20 pts
Stealth field           20 pts
Warp Rift               18 pts
Splinter Barrage                20 pts
Long dark Scythes       15 pts

Shadow grenades:
It is used when charging into combat. It darkens the area and therefore gives the opponent a weapon skill of 2. It does not affect daemonic creatures.

Dark Blade:
It always wounds on a 2+ and ignores armor saves. In addition on a roll of 6 to wound it instantly kills.

Warp pistol:
It counts as 15" range strength 4 AP 1 Assault 1.

Warp rifle:
It counts as 30" range strength 6 AP 1 Assault 1. In addition to this it reduces armor values above 12 to 12.

Hypnosis grenades:
These are used when charging into CC. It halves the opponents initiative and also reduces armor saves better than 4+ to 4+.

Razor Rifle:
It counts as a 24" range weapon and strength 5 AP 3 Assault 1. The targetted unit is auto-pinned.

Vehicle Upgrades:
Warp Cannon:
The vehicle may replace one of its weapons with a warp cannon. It is a 45" range strength 10 AP 1 Heavy 1 blast. In addition to that it reduces armor values above 12 to 12.

Stealth field:
A vehicle with a stealth field may not be shot at or assaulted unless it shot 2 or more weapons, or unless it is within 6" of an enemy infantry. A raider may not take a stealth field.

Warp Rift:
It may shoot all weapons moving 12". It also can move without shooting up to 30".

Splinter barrage:
The vehicle may replace on of its weapons with a splinter barrage. It counts as a gatling splinter cannon (12 shots).

Long Dark Scythes:
This vehicle may tank shock even if it is not a tank. Also measure a 6" distance outside of the sides of the vehicle and every thing within that 6"  tank shocked with a -2 leadership modifier.

And they are all the upgrades. Now for new units:
Elites:
Lurkers
Warp rift Warriors
Troops:
Tortured Enemies (Orks, Guard, Space Marines and Tau)
Fast Attack:
Hell Riders
Night Strikers
Heavy Support:
Rampage
Marauders

Lurkers:
Pts: 30
WS:4
BS:4
S:3
T:3
W:1
I:5
A:1
Ld:9
Sv:5+
There are between 5-10 Lurkers in a squad.
Lurkers are armed with needle rifles, Always hit on a 2+ wound on a 2+ and if the target dies from this weapon then they explode as though a stinger killed them. If the rifle hits on a 6 then it ignores armor saves. If it wounds on a 6 then it is instant death.

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