This sort of thing has happened before; just a few months ago, the initial i OS 9.3.2 rollout "bricked" the company's 9.7-inch i Pad Pro, which led Apple to temporarily pull back the update.
But it's worse when these problems tarnish the launch of a brand new, major release that's actually quite good — if users can manage to successfully install it.
My own personal phone is an i Phone 5c that I bought in December, 2013.
I’ve been quite happy with the phone overall, but the last update I installed to it was i OS 7.1.
According to widespread complaints across social media, many i Phone and i Pad users ran into installation problems.
Yesterday, Apple released i OS 9.1, its first major point update to i OS 9.
Apple typically takes a few months to put a coat of polish on its major updates, and this one is dropping unusually quickly — as the chart below shows, i OS 9.1 spent much less time in beta then any OS update since 8.1.
OS 9.0 had a fairly quick turnaround as well, particularly considering that Apple promised to evaluate its performance on a wider range of devices and has gradually increased the number of products that each OS runs on.
When you see changes in Chrome, those changes have usually been tested out in an early version of Chrome called Chrome Beta.
If you want to get a preview of what's coming down the line in the future, check out the Chrome Blog.