I managed this on Thursday and sure enough it was my Frostgrave bundle. There were a range of deals on offer but I'd gone for a fairly modest collection...the Thaw of the Lichlord supplement, a box of the new Cultists (which look excellent) and a few extra miniatures...some treasure tokens, a Lich Wizard and Apprentice, a Templar (with a big hammer!) and a rather Nazgul-ish looking Frost Wraith.
I noticed at the end of the supplement it mentions the next release 'Into the Breeding Pits' which is set in the catacombs and sewers under the city and scheduled for release in July 16.... now I need to check if my son ever got rid of his GW Skaven....!!!