<Table> <Tr> <Th> Generation </Th> <Th> Release Date </Th> </Tr> <Tr> <Td> 1st </Td> <Td> October 25 , 2011 </Td> </Tr> <Tr> <Td> 2nd </Td> <Td> October 2 , 2012 </Td> </Tr> <Tr> <Td> 3rd </Td> <Td> September 1 , 2015 </Td> </Tr> <Tr> <Td> </Td> <Td> August 31 , 2017 </Td> </Tr> </Table>
when did the nest 3rd generation come out
September 1 , 2015