Two recent issues of Logos & Episteme feature papers on skepticism:
Vol. 2, Issue 2: Vincent Hendricks and John Symons, "Limiting Skepticism."
Vol. 2, Issue 3: Hamid Vahid, "Skepticism and Varieties of Transcendental Argument." In this issue, there is also a review of Scott Aikin's Epistemology and the Regress Problem.
These papers can be accessed for free here.