Some good news is that there is a test orchard of about 250 of the most blight resistant American Chestnut trees in Lord Stirling Park in Basking Ridge, New Jersey that was planted almost three years ago. I visit there periodically, and it appears, to my non-professional-arborist eye, that most of the seedlings have done well.
Here’s a link to a newspaper story from when the seedling were first planted in 2014: http://www.nj.com/messenger-gazette/index.ssf/2014/05/somerset_county_park_commission_helps_rescue_american_chestnut.html
For more current information you can contact the Somerset County Environmental Center where the orchard is located. There are links on this page: http://www.somersetcountyparks.org/parksFacilities/eec/EEC.html