According to an August 10 announcement from the Fellowship of Ethereum Magicians, a self-organized gaggle of Ethereum developers, the group will meet up for its Council of Prague in the days leading up to the global Ethereum developer conference Devcon4. This event is the last of the fellowship's triannual, in-person gatherings, preceded by the Council of Paris in March (alongside the Ethereum Community Conference) and the Council of Berlin in July.
The magicians will gather unconference-style, i.e., based around the informal exchange of information and ideas among participants. The author of the announcement, Boris Mann, notes that the goings-on of this gathering will be "specifically different" than those of Devcon4. Members of rings (the fellowship's working groups concerned with particular topics) and Ethereum improvement proposal (EIP) authors can work together at the Council of Prague to make progress on various EIPs and Ethereum requests for comment (ERCs).
The fellowship also has a wiki agenda available via GitHub where magicians and other Ethereum community members can help build the gathering's schedule and publicly list their attendance, if desired. Working sessions will be separated into slots that are a few hours long.
A relatively new group, the fellowship was assembled by Ethereum players Jamie Pitts and Greg Colvin "to maximize technical opportunities, share ideas and work together effectively, online and in person, across national, organizational and other boundaries" regarding the advancement of the network's improvement process, like through EIPs and ERCs. Pitts, Colvin, and Mann all appeared at the most recent Ethereum Core Devs meeting to discuss the group's mission, vision, values, and work.