As taxvox blogmeister, Howard Gleckman, noted last week, the estate tax is once again in play in Congress. TPC has updated our estate tax estimates to reflect the latest CBO projections and IRS data. The main factor driving the revisions is that there's a lot less wealth to tax now than there was a year ago. The new tables show the distribution of returns, value of estate, and estate tax by size of estate for 4 policy options in 2011.