Who has been promoted to League 2 and who has come down?
Southend United will face Cambridge United for the first time since 2005 – the year Blues won promotion to League 1, next season.
Blues will face Cambridge and Luton Town again next season following their Conference success this season, with Luton winning the league and Cambridge winning promotion via the play-offs.
Coming down to League 2 is Shrewsbury Town, Carlisle United, Stevenage and Tranmere Rovers following their relegation from League 1.
Blues have met Cambridge United 32 times in their history, and are unbeaten in their previous seven meetings with them.
Conference winners Luton will come to Roots Hall for the first time since a 2008 meeting in the FA Cup. Blues have won 21 of the 66 meetings with Luton.
Blues have come up against Carlisle United 33 times in their history, and the last meeting was in 2010 when Blues were relegated from League 1.
Shrewsbury Town, who last visited when they won promotion to League 1 in 2012, will also visit. Blues have won 26 of the 57 meetings between the two sides.
Tranmere Rovers are the third of the four relegated clubs who Blues will face. In the 48 meetings between the two, Blues have won 13, and lost 21. The last meeting was in February 2010.
Finally, Stevenage will visit Roots Hall next season for just the second ever time. Blues have won two and drawn one of just three meetings with Boro.
Fixtures will be released at 9am on Wednesday 19th June.