Hi Jeff,
Unfortunately I prohibited from commenting on NT7 at this time due to CHM regulations.
But there are only 6 days to go to the release, so there may be some news then which is applicable.
Bear in mind that IE10 is new and it may take some time for everything to support it directly. I am hopeful for solving the IE9 problem with TinyMCE as well, even in NT6, but time at the moment is very limited. (and debugging in IE particularly painful)
I know it's an oft-repeated refrain, and I know we don't have control over it, but it's worth reminding clients that there are alternative browsers and they're all better than IE in almost every possible way.
To paraphrase C. S. Lewis (and taking his quote completely out of context)
"We are half-hearted creatures, fooling about with Internet Explorer when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased."
cheers
Bruce