Microsoft pushed its latest Windows 10 Insider Preview for PCs, Anniversary Update build 14342, to the Slow ring today, but there's a further update to look out for too.
Gabe Aul said today that there's a new
cumulative update for that build rolling out to both the Fast and Slow rings:
Microsoft explained on its blog that the update to build 14342 "fixes the issue that occurs where you can't close Microsoft Edge or get context menus to work if you turn off all extensions without uninstalling them". Additionally, it should fix "some issues causing some devices to bugcheck (Bluescreen)".
Finally, Microsoft promised that ISOs of Windows 10 Insider Preview build 14342 are "coming soon". The most recent ISOs to be released were for build 14332 two weeks ago.
Source: Windows Blog
Update: An earlier version of this article described the KB3158988 update as a 'cumulative update'. Although the update includes several fixes, Microsoft's Brandon LeBlanc has clarified that it isn't a cumulative update.