There has been a buff to Blood DK’s talent of Improved Death Strike – it now provides 40/80/120% bonus damage, up from 30/60/90%, and a 10/20/30% critical strike bonus, up from 3/6/9% (source).
This would not affect Blood Shield (I assume – as it is inbound damage not outbound that is used in the calc), or affect threat beyond the additional threat caused by the damage applied.
This seems good, I like any buff. The hotfix now applied to live realms as at 19 July 2011. If Death Strike’s Bloodshield would persist a few seconds longer I’d be happier still.
I didn’t note any major issue, but then I only really tank when we’re very short of actual Tanks these days. There area few other sources which have requests for this, dating back a long while. Some folks don’t believe this is real at all.