Apple has abruptly notified resellers that it's ramping down stock of iMacs and Mac minis in what's likely a sign of new models ahead, according to leaked details. US-based stores are being told they can no longer place new orders for any of the existing iMac models and, according to AppleInsider, at least the starter Mac mini configuration. A supply change of the sort is often a sign Apple is readying new models and wants existing stock to clear out before the new models are ready.