By Neil Hughes

Published: 12:35 PM EST

Unsurprisingly, supplies of existing iPod models across the entire lineup are low as Apple's anticipated media event on Sept. 9 quickly approaches, with likely product upgrades.

Speaking with Apple Authorized Resellers, Ars Technica has found that the current stock of iPod models is no longer being shipped, and all of the current SKUs are being discontinued. The news is expected, as Apple refreshes its iPod lineup every September.

"According to insiders speaking to Ars, stock of current iPod models is running dry and new ones aren't coming in anytime soon," the report states. "This all but confirms that an iPod refresh is on the way, but we already knew that."

Sources have confirmed to AppleInsider that Apple will unveil its new iPod lineup on Sept. 9. The event and location have not yet been announced, but one could assume it would be held at San Francisco's Yerba Buena Center, where it has been in previous years.

At the event, Apple is expected to announce new versions of the iPod nano and iPod touch, both equipped with cameras. Though those models have likely been confirmed with numerous photos of third party cases, less clear is a more recent rumor on the iPod classic also receiving a possible camera upgrade.

Weeks of rumors have also suggested Apple could announce iTunes 9, which could have support for Blu-ray and social media.