I am taking a course through Learner's Edge and the new edition is the text. I have the original one too, but it is packed away at school so I can't make too many comparisons yet. I haven't dug too deep into it yet either, but from a quick look through it does include consideration for the Common Core Standards and at the beginning of each chapter she has charts for "Possible Supporting Targets" and "Possible Assessments for Learning". If you take the class, the book is free
I just finished the new edition and I do think it is worth it. Her first edition was easy to read and so is this one. It has some newer thinking for strategy instruction, but not overly so. I didn't feel it went into the Common Core very much, but her strategy instruction ideas definitely support the CCSS. I am glad to have the newer edition because she provides monthly guiding questions, targets and possible assessments. I don't think it is a very expensive book and if you wanted a few new ideas, I wouldn't hesitate to purchase it---- but keep in mind, I am a fan of Debbie Miller!