During the last week of June 2012 FamilySearch added and updated Pennsylvania record collections on Familysearch.org
The latest additions are:
Pennsylvania Probate Records, 1683 - 1994. These records are currently browsable and not indexed, however indexes are included within the county will, administration and Orphans' Court collections.
Philadelphia City Births, 1860-1906. As of 2 July 2012, no images are available but over 1,000,000 records are indexed and searchable.
The latest updates are:
Pennsylvania County Marriages, 1885-1950. Updated to over 1,600,000 searchable, indexed records with images.
Philadelphia City Death Certificates, 1803-1915. Updated to over 2,400,000 searchable records with images.