Appleís surprise announcement that its next update to OS X dubbed Mountain Lion will come as soon as this summer, has also yielded an additional surprise. As with the recent shift to OS X Lion, Apple will cut off users of older Macs from its next-generation OS -- for Lion, IBM PowerPC-based Macs missed out. However, the arrival of Mountain Lion may also see the first Intel-based Mac casualties, as support for the original MacBook Air is not currently included within the current release developer release of Mountain Lion.
