There are more rules for the latest units in the Imperial Armour Apocalypse 2 book:
-XV9 Hazard Close Support Armour
-Broadside Destructor Phalanx
-Swift Protector Wing
Alright here are a few thoughts :
I have 3 XV9 Hazard Suits and field them regularly in Apocalypse Battles and sometimes in normal scale battles too, after permission from my opponents
They are expensive but depending on your weapon selection they can really kill stuff, esp. marine-type models
I always take the Fusion Cascade, its basically a Multi-shot melta Weapon. i always take 2 of them per model plus shield drones. T5 is very nice, i wish all suits had it

you can imagine what happens to terminators and marines when hit by those XV9. i use them mainly to keep my deployment zone clear of droppods/shocktroops/terminators etc because they lack range, the fusion cascade is 12" only but i really love them, also dreadnoughts aren´t a real threat because of their melter rule.
Secondly i field the hammerhead gunship with fusion cannon part of a formation consisting of 3 hammerheads. sadly i can´t tell you that much about its efficiency, he is always the first target of enemy orbital bombardments or D weapons, which might tell you about its capabilities

in one game he survived and wrecked whole dreadnought formations and turned a hole expugnator squad to dust

with its range of 24" its amazing, also the fusion cannon is twinlinked
last one is the tigershark ax-1-0. his points cost is huge, but he kills a landraider per turn or whole marinesquads because of his AP3 template. if you move him carefully out of range of lasercannons (only 36" range versus flyers) and your enemies don´t have AA weapons he never gets destroyed and can wreak havok on the table with its 108" range weapons. i´m still not sure if he´s worth the points, he appears in round 2 the first time and i really wish he had 2 twinlinked heavy railguns. it really depends how many turns of apocalypse you play. my gaming group hardly passes the third round so he can shoot twice. and i also play a lot against (chaos)marines, orcs and eldar. can´t give you impressions versus other armies though.
feel free to ask questions, apologies if i messed up english somewhere

hope this makes any sense !
PS: as i am a big fan of transformers, gundam and such i really like the design of the xv9 suits and the new broadside suits too. are they worth their money? i think not, material-wise, as all forgeworld models in my opinion. but they look great on the battlefield and put fear in your enemies hearts when they learn about the fusion cascade the first time after you send their precious terminator squad to hell
