Here are the newest additions to The Best Ways To Keep-Up With Current ELL/ESL/EFL News & Research:
AccELLerate! is the free quarterly newsletter of National Clearinghouse For English Language Acquisition. That link leads you to the issue archive.
David Deubelbeiss has collected some great resources at his School of TEFL.
The Marzano Research Laboratory doesn’t have a lot of research specifically for ELL’s, but most of its work can still be applied to them. You can either watch previous webinars they’ve hosted, or just download PDF’s of them.