When Vanessa Redgrave (the voice of mature Jenny) appears on screen for the first time, the on-screen caption gives the date as 2005 and her husband Philip (Ronald Pickup) suggests she write her memoirs. However by 2005, the first two volumes (Call the Midwife and Shadows of the Workhouse) had already been published.
The ship in the intro for all the Series is the Dominion Monarch. Series 7 is set in 1963. That ship was scrapped by the end of 1962 so it should've been removed from the intro.