I think everyone is uncertain!I'm still uncertain on the 1D&D SRD point: if they release it under the OGL 1.1, and OGL 1.1 is in fact a new version of the same OGL license, then is the 1D&D SRD also available for use via OLG 1.0 and 1.0a by virtue of Section 9?
My take is this: by calling the new licence an OGL v 1.1, WotC may incorporate by reference section 9 of the OGL v 1.0/1.0a. Which would then have the consequence that you point to.
But my own view is that it shouldn't be that hard to draft a new licence agreement, even one called OGL v 1.1, that expressly excludes any incorporation by reference of the old section 9. That said, I do agree with @S'mon that the drafting gets even easier if the new agreement is not called OGL v 1.1. But WotC may have PR-type reasons to want to keep using the OGL label.
Anyway, I don't see how there can be any abstract yes or no answer: because it's a question of construction, it has to depend on the actual terms of the new licence.