The current version of the Planck ERCSC is v1.3 which was released 4 Jan 2012. When compared to the original v1.2 release of the ERCSC in Jan 2011, changes were made to certain columns in the nine single frequency catalog files and to the explanatory supplement as summarized below. The convention for GAU THETA and BEAM THETA was incorrect in the catalogs from 11 Jan 2011. For GAU THETA, the reference angle corresponding to 0 degrees was offset from North by 90. For BEAM THETA, the reference angle was correct (i.e. 0 degrees was in the direction North), but the values were given a range of -90 to +90 instead of 0 to 180. In addition, the DATESOBS and NUMOBS fields did not include the dates corresponding to the Planck First Light Survey. The DATESOBS field was also found to be incorrect by larger than a day in many cases since it was derived from planned pointing files instead of actual pointing files. These four catalog quantities have been updated in the revised v1.3 catalogs. The color corrections for the LFI flux densities were described in the earlier version of the explanatory supplement as multiplicative while they were in fact, divisive. The numbers appropriate for multiplicative corrections have been added. There is no change made to the positions/numbers of sources or their flux densities in the single frequency catalogs compared to the v1.2 catalogs. There is no change to the ECC.fits and ESZ.fits files.