I think we'll get around 6/7 buildable lots from the screenshots. In the town there's definitely 3 lots at the least, possibly 4 but I can't tell if the building in the back is a lot or not
https://i.ibb.co/2d1W044/sizes.png
https://i.ibb.co/WBFYztN/sizes-2.png
They've also mentioned two different player made garden lots which aren't in this screenshot, so that makes 5/6 lots in total and there's also a beach lots we can see from the trailer, which makes 6/7. There's also other lots shown in the trailer so possibly they will be full lots in the world too! Not the worst for a game pack at least.
Personally I'll be deleting the wedding lots and replacing them with houses unless I need them, so then I can live in the world and use it and it doesn't become a Magnolia Promenade type situation :)
