Just came across these on the FW website.
[url=http://www.forgeworld.co.uk/resources/fw_site/fw_pdfs/aos_warscrolls/warhammer-aos-tamurkhans-horde.pdf]Clicky for Tamurkhan[/url]
[url=http://www.forgeworld.co.uk/resources/fw_site/fw_pdfs/aos_warscrolls/warhammer-aos-legion-of-azgorh.pdf]Clicky for Legion of Azgorh[/url]
Currently no sign of rules for Monstrous Arcanum, though we are assured they'll be delivered soon enough.