A question on the GOP tax freeze

To counter Obama's proposal to allow the Bush tax cuts to expire for "the wealthy," while making them permanent for the not wealthy, Republican John Boehner has proposed a two year freeze on "all federal tax rates." Not that there is any chance of passage, but the language raises an important question for us.

Does he mean to freeze the federal estate tax at zero for two years also?

I haven't found an answer, and I doubt that is his intention—but I've learned to never say never. According to this item Boehner will be coming out with a "flat tax" with just two brackets. The estate tax is not mentioned.