In 1358, Cyric was killed simultaneously in all timestreams, with the help of god-level psionics (care of Leshara Tanthul). This has caused a lot of paradox, which is still being sorted out.
A previous change--that Tanalasta was childless, and Azoun V did not exist--has been retconned.
Azoun V, born 1371, took the throne in 1384. Regent Alusair Obarskyr stepped down willingly. (This is all canon)
Non-canon: Azoun V is aided by his longtime mentor and confidant Lord Nero, who is secretly Sememmon. Alusair and Caladnei do not trust him.
In 1372 (or so), Rayanna Rose is named Baroness of the Stonelands in return for pacifying that area. She later marries Sheridan Fairfax-Dauntinghorn in 1375.
In 1375, Myrmeen Lhal's only son Rowan is married to Queen Alexsanka Dragonsbane of Damara. She steps down as High Lord shortly thereafter. Alusair, seeking a close ally in Myrmeen's place, asks Baroness Rose to rule in Arabel, but she demures, citing too much work in her home province, suggesting her husband in her stead.
In 1385, Alusair and Caladnei seized Wilhelm Grayfall, naming him the "true" Azoun V, and rallying a significant portion of the War Wizards to their cause. Azoun V (the reigning king) denounces them, stripping Caladnei of her leadership of the War Wizards and naming Laspeera Inthré in her place. The rebels seize Arabel and remain encamped.