And it takes foreeeever to get one approved
According to the Unicode Consortium's sample timeline, it takes roughly a year and a half from the time a successful emoji is proposed to its implementation because of the UC's strict meeting schedule and bureaucratic process. Even though the deadline for new emoji proposals is October 1st, they will not be considered until the following year, and even then, only by the UC's emoji subcommittee. If the emoji in question makes it through that round, it's then taken up by what's known as the Unicode Technical Committee, which'll likely discuss it over the course of an entire year (it only meets once per quarter). If the consensus is positive, it will then be considered a full-fledged "candidate," and put to a final vote during the last meeting of the year.
However, approved emojis don't end up on your keyboard right away. As you've undoubtedly noticed, several exciting additions in the latest Unicode 9 release still haven't made it to iOS. This is because "vendors" (i.e., Apple, Google, and other software developers that support emojis) require time to prep their versions of the new batch before deploying them.
So just remember, take a moment to appreciate when you finally fire off that long-awaited bacon emoji for the first time -- it's a moment that's been in the making since 2014.
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