"Arrow" is currently on Season 3 short break, but will be back before March ends. As of now, the TV series' news and spoilers about its upcoming episodes have come through their official Episode 17 official synopsis with the title "Suicidal Tendencies."
The upcoming episode will feature the comeback of its "Suicide Squad" as well as Lyla and Diggle's wedding. Through the Green Arrow TV, the official CW synopsis said:
"Diggle marries Lyla; the Suicide Squad enters again. This is a time for celebration as Diggle played by David Ramsey and Lyla by Audrey Marie Anderson get married. Deadshot, who is portrayed by Michael Rowe interrupts the couple's honeymoon and shares with the information that the Suicide Squad has a new mission. They are to rescue Joseph Cray, the US Senator, from a hostage being executed in the Republic of Kasnia. Amanda Waller, played by a guest star Cynthia Addai-Robinson breaks the mission and brings in the newest member of the squad, Cupid. Meanwhile, Oliver learns about the new Atom costume and will have a heated stand-ff with Ray, while the latter hits a rough patch with Felicity. Keto Shimizu wrote the episode under the direction of Jesse Warn."
Diggle and Lyla got back together and now have their baby Sara. Diggle pops the big question to Lyla, the second time. The day went on happily with Oliver taking some time off just to fulfill his best man duties. However, the celebration is cut short by the squad coming over introducing their newest member and mission.
Ray and Felicity are to go through a "rough patch" after kissing for the second time and sleeping together in the previous episodes. The circumstance was inevitable considering the news of Brandon Routh in the "Arrow" and "The Flash" team-up with Victor Garber, Wentworth Miller, and Caity Lotz, the Examiner reported.
Meanwhile, the CW will air "Arrow" season 3 episode 16 on March 18.