Microsoft released new updates for all supported versions of Windows today, and that includes older supported versions like Windows 7 and Windows 8.1. They contain Spectre and Meltdown mitigations.
Windows 11 Beta Channel gets Taskbar, File Explorer improvements, and ISOs
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Windows 7 sp1 RSS
Today is Patch Tuesday, meaning that Microsoft is updating all supported versions of Windows, and that includes Windows 7 SP1, Windows Server 2008 R2 SP1, Windows Server 2012, and Windows 8.1.
Microsoft is releasing a new "convenience rollup" for Windows 7 users. The update will contain all security and non-security fixes that were released since Windows 7 Service Pack 1.
Microsoft has released a new update to Windows 7 that allows users to get rid of older Windows Updates via a new Disk Cleanup wizard that should free up some disc space.