Abstracts from recent issues of the Journal of Fluency Disorders offer a great way to keep up to date on recent research about stuttering.
The abstracts also offer highlights regarding recent research about the available treatment options for fluency disorders — including stuttering as well as cluttering.
Science Direct also offers abstracts for a wide range of other subjects.
For your interest, here’s an article I wrote some time ago about treatment options for stuttering.
Peer-reviewed professional journals are a great way to keep up to date on research.