The compiler's front end has support for those types, but there's no support in the generators.
We haven't planned which features will be in the releases after 0.8. If I had to guess, I'd say those types will probably not be supported in EDT 1.0. We're not trying to make 1.0 be a complete open-source version of RBD. We're more interested in new capabilities like the extensible compiler and generators.