I recently began reading this study called Insights and Innovations done by the American Institute of Architects Design for Aging Advisory Group. It is a summary of all the projects that were entered in the yearly AIA DFA design competition.
The executive summary is just four pages and definitely worth a read as it outlines some of the themes on the cutting edge of design for aging.
For me the big take-away was that design for aging is moving in the direction of the principals of smart growth. This includes design elements such as: connecting facilities to the local neighborhood, intergenerational developments that are not JUST for seniors and access to public transportation.
There was also an emphasis on holistic health in the new facilities designs. This would include building features like cross ventilation, physical connections to nature and rooms for a variety of daily activity choices.