Yea that is sooner then I though considering what we have been hearing. But with the pictures recently shown from WD preview pages showing May, this works. Most of the time UK gets releases 3-4 weeks before US.
I find it interesting they are making this army for both WHFB and WH40k. Shoot figure out how to make the bases easily interchangable, or just do all square bases(don't think 40k really matters) and have an army for both games for the same cost.