First I thought the picture was an old one as everything seemed to be exactly like before outside of spawn city. But then I noted that my quarry control center didn't exist anymore, so I assume exactly the same seed is used to create a similar map?
We seem to be getting all the same types of biomes, but the way they generate is often different. Eg where a large grassland was before is still a large grassland, but with a volcano in it. There will be chasms where there weren't before. So it still makes for some interesting exploring.