New faq is out:
http://www.games-workshop.com/resources/PDF/Errata/Warhammer_40000/Dark_Eldar_EN.pdf
If you fail a Shadowfield save, but pass FNP, you still lose the Shadowfield. Joy.
I've also heard that immobilised skimmers can no longer jink, but I can't find the new rulebook faq to confirm this.
Anyway, how do you think this will affect Archons?