List of Last Tango in Halifax episodes

The first series of Last Tango In Halifax aired between 20 November and 19 December 2012. It was the UK's highest rated new mid-week television drama of 2012 and was re-commissioned for a second series. The second series aired from 19 November 2013 to 24 December 2013. The series was re-commissioned for a third series on 24 December 2013, ahead of the final episode of the second series. The third series aired from 28 December 2014 to 1 February 2015. Following the end of the final episode of series three, the BBC announced that a fourth series had been commissioned. Series 4 was broadcast on 19 and 20 December 2016.

Is this statement correct "is there a season 4 last tango in halifax"?
yes