To take effect this year barring any last minute changes.

As it affects our immediate area: Common Moorhen, Gallinula galeata, is split from the old world’s G. chloropusis. Also proposed is a name change back to Common Gallinule.
http://www.aou.org/committees/nacc/proposals/2010_A_votes_web.php#2010-A-10

The splitting of Yellow-rumped Warbler failed at this time.
http://www.aou.org/committees/nacc/proposals/2010_A_votes_web.php#2010-A-4

See the proposals as reported in the ABA Blog:
http://blog.aba.org/2011/05/bulletin-new-splits.html

And here is the original source from the AOU:
http://www.aou.org/committees/nacc/proposals/pending.php