The Twitter account @Apple was created years ago, but it has never been active - until this week.
Then many started noticing this tweet from Apple:
But the tweet doesn't appear in Apple's timeline. And it gets stranger, as Nathan Bashaw explains in a post on Medium. It's a clever use of Twitter.
Here the link to Apple's tweet.
By the way, as noted by Matthew Panzarino on TechCrunch, Apple is probably paying Twitter around a million dollars to place that Apple logo in the hashtag.