The Congressional Research Service (CRS) recently released an update (dated January 6, 2010, as there is often a delay between the update and release) of its "Comprehensive Nuclear-Test-Ban Treaty: Background and Current Developments" report. Have a look here.
"[Arms Control Today] has become indispensable! I think it is the combination of the critical period we are in and the quality of the product. I found myself reading the May issue from cover to cover."