yup. Brans story is told further in DWD.
As for Dany having babies, Maegre Magi (or whatever she was called) was quite a bitter and spitefull woman. The curse could be nothing more than the rantings of an old woman.
or she could be blessed by maggy the frog for returning peace to westeros, or well, anything. I can't see the end of the dragon bloodline with her though