The slip in shipping times currently appears exclusive to the Mac mini, in multiple Apple Online Stores, as Apple’s other Macs are still showing the typical 24 hour times to ship.
While a slip in shipping times does not confirm an imminent update, Apple’s Mac mini was last updated in October of last year and lacks the current Intel Haswell chipset. The last major redesigned of the computer occurred in mid-2010.
The slip also comes at a time in which Apple is rumored to be preparing Haswell-based MacBook Pro and iMac models for release in the coming months. MacBook Airs with Haswell chips debuted in June.