It appears the new second batch of new houseboats have arrived next to the new Bellisseria continent. The lab have moved over the new houseboat expansion in the past 48 hours or so however they are still not accessible to everyone yet. If you max out the draw distance to 1024 (m) in preferences you can move around the new houseboat regions.
Teleport to the (Le Prince) region in Second Life and have a look at the new houseboats.
The houseboat parcels are to set to 32 x 32 (1024 sq) and 16 x 64 (1024 sq). If you zoom into the houseboats (green specs) there are new region names. From first glance it looks really nice and the layout is great. There is a new pickle shop in the centre where you can get free jar of pickles lol.
I would imagine we will see these new houseboat regions open sometime this week. It looks highly likely now.