Sure? Perhaps you have the beta.

Not calling you a liar. ^ ^ Ha, keeping it friendly, but in checking Liquipedia, the Blizzard, (at least I believe it is Blizzard's weak against tags), it says they are weak against Hellions. This leads me to believe they are light. However if you have any other not to say proof but some info just to solidify that they are armored I'll accept that. Just seems odd, I know the Swarm Hosts are armored, so they wouldn't be weak to Hellions, and it seems odd that spawned units would be armored since there is no precedent of that. Looking forward to getting this solidified either way. :D
http://wiki.teamliquid.net/starcraft2/Swarm_Host