Facebook said today that its developer event, F8, will be held March 25 and 26 in San Francisco, the first time the gathering will last two days.

In a Save the Date note sent out today, Facebook said the event will be longer because the “developer community is bigger today than it ever has been,” the company said in the note. “The scope of the company’s products has broadened, and there’s more content to share than can fit into a single day. The additional day means double the number of technical sessions, product demos, and onsite experiences for Facebook’s growing developer community.”

Registration for the event will open up in early 2015.

F8 has been a rich source of news about Facebook’s efforts in the past. At the 2014 edition, for example, the company announced that Facebook logins were going anonymous; that its Parse mobile app development tool would work offline; and unveiled AppLinks, which lets multiple developers of mobile apps link their projects together.

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At last year’s event, Facebook’s CEO Mark Zuckerberg also said that the social media giant was “all-in” on mobile.

Zuckerberg said at the time that F8 would become an annual event going forward, like Apple’s Worldwide Developers Conference and Google’s I/O, rather than taking place intermittently.

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