The following information reflects what is new in the edX Platform as of June 10, 2014. See previous pages in this document for a history of changes.
This release implements a change in the edX Platform software architecture. The Key Introspection API is now used to uniquely identify Xblocks, the building blocks for edX courses. This change simplifies the way that the application identifies the course content internally. This change does not affect how you author content.
In edX Studio, URL formats have changed for all courses. If you previously bookmarked a page in Studio, that bookmark will no longer work. You must update the URL.
Following is a sample of this format change:
This change does not affect student-visible URLs.
In the edX LMS, the only change is that to reset attempts or rescore student responses in the Student Admin tab on the Instructor Dashboard, you must now specify the complete location identifier of the problem. The Student Grades and Grading section is updated with this revised requirement.
For additional technical detail about this architectural change and the opportunities it creates, see Opaque Keys on the GitHub wiki.