Butler, currently editor of societyguardian.co.uk, said the new-look supplement would be more 'modern', taking the paper's Thursday science section, Life, as a template.
He added: 'There will be a big interview with a key industry player every week. The core will remain social care, charities and health. But we will be doing more on regeneration and urban renewal issues.
'It is a quite a wide brief and will include things like housing, planning and rural affairs issues, from how do we build a new town in the Thames Gateway to how do you regenerate a village in the West Country.'
There will also be increased editorial coverage of jobs on the back and inside back pages. 'On the one hand it will be quite "careersy", and on the other level it will be quite "industry insider" - who's on the move, what can you do next, what are the sexiest jobs,' Butler explained.
PROs would be welcome to pitch ideas, he added. 'We have always had a good relationship with PROs in the public sector. Nothing is ruled out - a good story's a good story. My approach is that there are no strict limits on what we do.'
With the relaunch, the Wednesday section will be rebranded as SocietyGuardian, putting it in line with other themed weekly supplements such as MediaGuardian.
Publisher Benjamin Wegg-Prosser told PRWeek: 'That also brings it into line with what we've been doing online with societyguardian.co.uk. Although it has always been a brand in its own right, we have never marketed SocietyGuardian specifically as a standalone before.'
A range of extra supplements and events will be announced in the next six weeks, Wegg-Prosser said. In addition, EducationGuardian and MediaGuardian are expected to be redesigned during the autumn. The projects are overseen by G3 editor Janine Gibson.