Why we’re introducing Windows servicing changes
Historically, we have released individual patches for these platforms, which allowed you to be selective with the updates you deployed. This resulted in fragmentation where different PCs could have a different set of updates installed leading to multiple potential problems:
Various combinations caused sync and dependency errors and lower update quality
Testing complexity increased for enterprises
Scan times increased
Finding and applying the right patches became challenging
Customers encountered issues where a patch was already released, but because it was in limited distribution it was hard to find and apply proactively
By moving to a rollup model, we bring a more consistent and simplified servicing experience to Windows 7 SP1 and 8.1, so that all supported versions of Windows follow a similar update servicing model. The new rollup model gives you fewer updates to manage, greater predictability, and higher quality updates. The outcome increases Windows operating system reliability, by eliminating update fragmentation and providing more proactive patches for known issues. Getting and staying current will also be easier with only one rollup update required. Rollups enable you to bring your systems up to date with fewer updates, and will minimize administrative overhead to install a large number of updates. (Note: Several update types aren’t included in a rollup, such as those for Servicing Stack and Adobe Flash.)
"Less is more" cf "1984"