The WTO’s World Trade Report 2012 will focus on non-tariff barriers. Of course, NTBs are nothing new, but they’re more relevant in a low-tariff world. Their relative opaqueness makes them more difficult to negotiate, discipline, and study. The WTO invites submissions of short articles for their discussion forum, though I have no idea about the scope for influencing the report (due out in July).
WTO: WTR 2012 discussion forum