The Church of Latter-Day Saints (LDS) continues to bring us all valuable resources as part of their FamilySearch site. One of the latest resources includes a database of TN Death and Burials that covers 1874-1955.
The information in the database is extracted from various sources; you can learn more here. It may not be a fully comprehensive database, but it is certainly worth consulting.
A link has been added to the Deaths page on the Blount County TNGenWeb site.