A summary of a December 2012 meeting document with current status detail is HERE ; HUD's website with much more information about this effort is HERE.
I anticipate that the portal will include a consumer level tool to estimate transportation/housing costs under different scenarios as well as a census tract level tool to assist in affordable housing and transportation planning and evaluation efforts.
This new HUD portal will likely replace/supplement the existing H+T website developed by the Center for Neighborhood Technology in Chicago. ( I suspect that the Center will likely play a continuing role in the evolution of the HUD portal).
( I note that Andy Cotugno from Portland's Metro was one of technical review panel consulted in the development of the Portal).
A snip from the December meeting summary:
Originally created and posted on the Oregon Housing Blog.