There's has been a surge of interest in Special interest leagues (sil) over at the alliance forums. SIL are events such as challenge missions hosted by an alliance guild on a weekly/monthly basis.
Prophecies Hardmode - Sunday June 10 at 3pm CST (1pm PST, 4pm EST, and 9pm GMT). Hosted by GBC
Altrumm Ruins - Wednesday June 16th 11AM PST/ 7PM GMT / 2PM EST. Hosted by BOGW