Yeah, still rolling out. As for extended memory, as I clarified elsewhere, while you can make a 2x24 it won't be saving you money compared to having the cores.

Yeah, still rolling out. As for extended memory, as I clarified elsewhere, while you can make a 2x24 it won't be saving you money compared to having the cores. I forget if this is made clear in the docs, but via the API this is laundered through machine types as custom-2-24000-ext.