Estate Tax: Up, Down or Out?

Uncertainty over the fate of the federal estate tax is complicating the role of financial advisers, Dow Jones reports. Two ideas in the news:

Exempt family farms, and businesses worth no more than $8 million, from tax as long as they stay in the family.

Raise the estate exemption to $5 million over ten years and cut the tax rate to 35%.

What will the federal estate tax actually look like in 2011? Any guesses?