Back again. Okay, some quick answers:
Zoanthrope Issue - A Zoanthrope brood follows all the rules for Brother hood pf Psykers except that the unit has a Mastery level of 2. In addition, if a brookd of Zoantrhopes uses the Warp Blast power, the number of shots fired is equal to the number of zoanthropes in that brood. (eg 3 Zoanthropes would make the burst and lance profiles assault 3)
Doom is gone, parasite is gone, mycetic spore is gone. Ymgarl stealers are gone, but the "ymgarl factor", of giving a special boost each assault round (+1 Str, +1 atk, Improve armour save by 1), can be purchased as a bio-artefact for 40 points.
Spore mines and shrikes are still around, and Red Terror is back. Gargoyles still have blinding venom, can buy toxin sacs and adrenal glands.
I don't see options to improve the Hive Tyrant's carapace to a 2+ save anymore, or any other HQ's for that matter. Looks like you'll need the Ymgarl Factor.
Tyrannofex rupture cannon is 30 points, 48' range, S 10, AP4, Assault 2
The tail morphs are:
Bone Mace, S 8, AP - , Unwieldy
Prehensile Pincer, S 6, AP 5
Thresher Scythe, S 4, AP 4, Rending
Toxinspike, S 1, AP 6, Poisoned 2+
A tail attack allows a single added attack, resolved separately from a model's other close combat attacks. It doesn't benefit from other melee weapons, biomorphs, etc.
Hive Tyrant stat line:
165 pts, WS 8, BS 4, S 6, T 6, W 4, I 5, A 4, Ld 10, Sv 3+ ( Interesting: You now have to pay 20 points for lash / whip, or it comes with two sets of ST)
FOC as follows:
HQ - Hive Tyrant, Swarmlord, ld One Eye, Tervigon, Tyranid Prime, Deathleaper
Troops - Warrior, Genestealers, Termagants, Hormagaunts, Ripper Swarm
Elites - Hive Guard, Lictor, Zoanthrope, Venomthrope, Haruspex, Pyrovore (Ha ha! Pyrovore "Elite"!)
Fast Attack - Shrikes, Raveners, Red Terror (as part of ONE Ravener brood), Sky Slasher, Gargoyle, Harpy, Hive Crone, Spore Mine Cluster (how mines are "fast" attack is beyond me)
Heavy Support - Carnifex, Biovore, Trygon and Prime, Mawlc, Exocrine, Tyrannofex
Powers of the Hive Mind:
1. Catalyst - 1 charge
Blessing that targets psyker's unit and up to one other friendly within 12'. Targets gain FNP.
2. The Horror - 1 charge
Malediction targeting single enemy unit within 24'. Target takes a pinning test at -2 Ld
3. Onslaught - 1 charge
Blessing that targets a single friendly unit within 24'. Unit can both run and shoot in the shooting phase.
4. Paroxysm - 1 charge
Malediction targeting single enemy unit within 24'. Target's WS and BS reduced by D3 (roll once for both)
5. Psychic Scream - 1 charge
Nova power, 6'. For each target unit, roll 2D6+ 2 and subtract Ld. Unit suffers wounds equal to result, no armour or cover saves.
6. Warp Blast - 2 charges
Witchfire power, either burst or lance. This is the standard Zoanthrope Warp Blast.