To add to your comment,
Back in 2009, the company that I was working for was already working on getting away from Flash as part of there web development. Aside from becoming early HTL5 adopters, the performance issues with flash were enought to motivate the dev team to move away from flash development.
This announcement is of no surprise. At the end of the day, Flash is still a layer on top of the browser, requiring it's own updates, so sooner or later it was goign to run it's course, and even more so given how much web traffic is generated from smartphones and tablets that don't support flash