They do orbit very close, but are still within the habitable zone because their star is an ultra-cool red dwarf. The fact that they orbit so close/quickly was part of what made them (relatively) easy to detect.

I think there are still serious doubts about them harboring life because their proximity to their star and its radiation might prevent any long-term retention of an atmosphere. But opinions seem to vary and we likely won't know for sure until more data come in.