It is a typo. I have issued a correction notice to the people that handle those types of things.
If you look at all other SB's and SD's issued for the RV-12(iS), you will find the following (or something very similar)-
Level of Certification: SLSA: LSA Repairman Maintenance or A&P
ELSA: Owner (certification not required)
Additional info related to additional discussion -
Van's, as an S-LSA manufacturer, is required by regulation to specify a certification level for completing any Inspection or Maintenance Manual task for an S-LSA. Those regulations, interestingly enough, require it be listed for an E-LSA as well, but we as a manufacturer can not dictate a requirement that conflicts with the FAA's regulations. As already mentioned, the first paragraph of FAR 43 makes the entirety of FAR 43 not apply to any aircraft that has an Experimental Airworthiness, so none of the regulations it contains that pertain to certification levels for completing any type of work or inspections on an experimental aircraft.
It is for that reason that the requirement for completing a condition inspection every 12 months, and the required certification level for who can do that inspection, is written into each experimental aircrafts operating limitations.