Bob,
1# I might overlooked at the note. Thanks for updating.
2# The master note for SP13 wasn't release yet and is expected now (since the note no is already created).
3# With my experience working in IE (I was a beta tester for a couple of IE products and am a Microsoft xMVP) I find lot of fixes in the later releases. However there is no documentation available that says this issue is fixed with the latest version of IE browser. But, since the SAP note says about a particular version of IE, it is evident that the other versions doesn't have a problem 
4# The note # 1628976 will be updated as and when the master note for a specific SP is released. SAP will add new master note when there are various SAP Notes/corrections released. You will have to wait for SP13 note for now.
Regards,
Raghu Boddu