Has there only been errata/clarification to the RULES in this game or have there been changes to the UNITS as well? If there have been changes to the units, are they (going to be) fixed in the second printing? Any idea when said printing would be out?
December 2014 for the core game, and about a month after that for the expansions. There have been numerous threads gbetween here and DPG's forum discussing the reprints and when they were available.
All important issues such as units with misprinted stats have all been addressed (all 2 or 3 of them). Those units with misprinted symbols have been corrected. The recruitment tiles now have the correct name to go with the correct unit markings of the units leader for the couple that were off. The few equipment tokens with misprinted faces have been corrected, etc.
But be advised, one of the Panzer II Luchs is still erroneously called a "Lunchs" on its recruitment tile.