For anyone interested, Imperator Guides has a very solid walkthru of the supposed daemons codex release. This is not the one listed on most sites yesterday (german translation), its much more comprehensive. Also, note the new rules to flamers (no longer way OP'ed, simply a solid unit), though screamers appear to be the same without ET. Other units appear to be looking interesting with this new rules set!

http://imperatorguides.blogspot.com/2013/02/daemon-rules-ahoy.html