It would appear as though, while this week has two new codices for you to pre-order, it's really this upcoming weekend where GW goes crazy and releases a ton of stuff. They've posted up a preview so you can take a look. New giants for Age of Sigmar. A whole plethora of new Necrons. New Middle-earth Strategy Battle Game figures. White Dwarf. There's something for everyone.
From the article:
This week brings a MASSIVE set of releases. Mega monsters are preparing to invade the Mortal Realms, more Necron units shake off the dust and join the fray, and another line of action figures from the 41st Millennium are poised to strike a pose on your shelves! Watch this to get the rundown.