The ability to sync apps across devices in Windows 8 and Windows 8.1 is a widely known feature now, and is a handy one at that. You can sync apps across up to 5 devices with on Microsoft Account, but Microsoft doesn't seem to think 5 devices is enough. Starting October 9, the app roaming limit will be bumped from 5 to 81 devices, yes you read that right, eighty-one.
"...we're increasing the app roaming limit to remove friction from the app installation process. Starting on October 9, Windows Store apps can be installed on up to 81 devices associated with a single Microsoft account. This will apply to all apps in the Store, for both Windows 8 and Windows 8.1," states the official Windows App Builder Blog.
Microsoft says that this change is in response to feedback from developers. It announced at its annual BUILD developer conference earlier this year that the company was planning to make changes to its 5 device limit, and now they've followed through with that plan.
We don't personally know anyone who has 81 Windows 8 and 8.1 devices. If you happen to know someone, make sure to let them know of the upcoming change!