The USDA in its Federal Register recently issued a non-regulated status to Pioneer Hi-Bred International's GM corn event DP32138-2. The line has been genetically engineered to produce male-sterile/female inbred plants to generate non-transgenic hybrid corn. The decision is based on evaluation data and on the comments received from the public in response to public solicitations on the environmental assessment and plant pest risk assessment. Documents on the written determination and findings of no significant impact are now available to the public.
See http://www.aphis.usda.gov/newsroom/2011/06/engineered_corn_seed.shtml for complete details