With Apple's latest update, it appears the company has stopped issuing security updates for OS X 10.5, which means that PowerPC-based Macs will be left more vulnerable.
The next version of the Digital Negative converter will be the last for PowerPC Macs. Does this have implications for Lightroom?
In OS X 10.7 Lion, Apple will officially do away with software support for the PowerPC architecture. Mac users may want to look at various applications on their systems to see about removing or updating them if they will not run natively on Intel machines.
Another coffin nail arrives for those with the older lineage: the Mac version of Mozilla's upcoming e-mail software will work only on Apple's newer Intel-based machines.
When Apple released some of the final updates to OS X 10.5 for PowerPC systems, a number of Harman Kardon iSub owners found their speaker systems no longer worked properly with their computers. The problem appeared to be a driver-related error but neither Harman Kardon nor Apple stepped up to fix the issue and owners had to resort to other speaker systems.
The difficulties of supporting some new architectural features on old chips mean Firefox 4 probably will work only on Intel-basd Mac computers.
Due to "performance enhancements that cannot be supported on the older PowerPC architecture," Flash Player 10.1 will be the last to support PowerPC-based G3 Macs.
As with Adobe's Creative Suite applications, the future version of Lightroom for the Mac will work only on Intel-based machines.
Adobe announces its decision to discontinue support for PowerPC-based Macs in its future releases of Creative Suite.
Why did Apple drop the IBM-backed PowerPC architecture and switch to Intel in 2005? Four years to the month, one person involved in the discussions between Apple and IBM offers some insight.