AT&T has added $50 to price customers must pay to upgrade the iPhone early or off-contract. Confirming a leak from Android Central (which wasn’t widely circulated because the post went up on April 1), the new plans mean that an upgrade will now costs $299 for the 8GB iPhone 3GS, $449 for the 16GB iPhone 4, and $549 for the 32GB iPhone 4.

An AT&T spokesperson confirmed the new pricing to PCMag, saying, “Only customers who are not yet upgrade eligible or who do not want to sign a contract are impacted. As mobile devices become more sophisticated, their cost goes up. This change reflects the increased costs, while still allowing us to offer customers the latest device before they qualify. We're happy to discuss individual account and upgrade needs one-on-one with customers.”

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