It's no secret that Apple's iPod business is not what it used to be, but the company has still held fast to the device, keeping it in the top menu along with the most important devices in its lineup.

This changed on Monday, the first day of Apple's Worldwide Developers Conference. The top menu on its website no longer lists the iPod; it has been replaced by "Music."

Of course, the iPod has not completely disappeared. You can still find it, but it will take one extra click: Go to the Store and then click "shop iPod." It's also at the very bottom of the Music page.

But the top menu change, albeit subtle, is important. In its last two quarterly earnings reports, Apple bundled iPod sales with Apple TV, Beats Electronics and accessories, without reporting sales numbers, only revenue. The last time Apple included iPod sales data in its quarterly report was in October 2014; in the previous quarter, the company sold 2.6 million iPods, on a revenue of $410 million.

The number is minuscule compared to iPad, iPhone and Mac sales, and it has likely declined even further since then. So why has Apple, until now, insisted on highlighting the iPod as one of its top products? Well, because it's one of the most important products in the company's history. It dominated music player sales throughout the 2000s and reinstated Apple as one of the top consumer electronics players in existence.

If you're nostalgic about the iPod, don't be. The device is not really dead — that is, not until Apple stops selling it. But when it does, which seems invitable at some point, it will live on, embedded in the iPhone. The reality is, with Apple currently selling a multitude of models — iPhone 6, iPhone 6 Plus, iPhone 5S and the iPhone 5C — at a variety of price points, the iPod is just not that attractive anymore.

The current menu (top); the menu on June 7 (below). Image: Apple, Wayback Machine

It's interesting to note that Apple has reshuffled the other items in the top menu as well. In a June 7 screenshot we obtained from Wayback Machine (above), the order is Store, Mac, iPhone, Watch, iPad, iPod, iTunes and Support. Now, with iPod gone and iTunes relabeled as Music, the order is Store, Mac, iPad, iPhone, Watch, Music, Support.

The new item listing makes more sense, as it moves from physically larger to smaller devices: Mac to Apple Watch. The old menu listed the watch before iPad and iPod, likely because it was a completely new type of device, released in April.

Conspiracy theorists may chalk this change up to Apple Watch underperforming in some way, but it's more likely a result of Apple's renowned insistence on details and neatness.