There are a few papers that have been delivered at the regional meetings of the Evangelical Theological Society. The following are what I have been able to find. Not all of the regional sites posted programs for the meetings. If you know of other papers on Hebrews, please let me know.
Midwest Regional Meeting, March 19-20
Bryan Dyer of McMaster Divinity College
"'A Great Conflict Full of Suffering': An Analysis of Suffering in the Epistle to the Hebrews in Light of Feminist Concerns"
Southeastern Regional Meeting, March 19-20
Joseph Greene of Southeastern Baptist Theological Seminary in Wake Forest
"The 'Eternal Spirit' of Hebrews 9:14"
Alan Knox of Southeastern Baptist Theological Seminary in Wake Forest
"A Theology of Encouragement in Hebrews"