I was looking for info on these new sets at the 1/72 group on vk.com, a Russian social site that seems to be a great source for 1/72 news that doesn't always make it to the English-speaking part of the web. And I found these pics! Here are some masters from one of the zombie sets:
These seem to be more modern, but they look like they'd complement the new Caesar zombies quite nicely. A lot of kid zombies in this set, which I find slightly discomfiting for some reason. But they definitely look good in a duly horrible way. There's also some box art to see, but it doesn't tell you much about the figures.
No preview pics of the Amazons, but there is a preview of the box art. I suppose it's NSFW, so I'll just link to it. It does give a bit of an idea what the figures will be like; definitely Greek in style, maybe a little more cheesecake than it has to be. I am looking forward to seeing what the actual figures will be like. There will be two sets, by the way; one for infantry, and one cavalry.
The post I found these in describe the sets' release date as "not soon," but hopefully there will be some more info available soon enough!