"I was just told that Beginning Algebra would no longer be included in OE after July 30."

Where/how did you hear this? I could not find this explicitly in any communication, e.g.
http://epgy.stanford.edu/parent-update
http://epgy.stanford.edu/land/email/Third_Parent_Letter_and_Web_Copy.pdf (1pg pdf)
though they do allude to various changes.

Anyway, we just enrolled recently so I assume we have access to the course for the full 10 months.