it's funny but Flash IDE is the best tool nowadays to create HTML5 animations.
Also Flash is used for crossplatform apps and game development for social networks, mobile and desktop platforms. I really doubt that million players of Candy Crush will remove Flash Player :) Top 25 Facebook games are made with Flash :) Market is still huge. There are no any alternative to Flash nowadays, Unity3D doesn't work in Chrome, WebGL export is a shit(we are all waiting for a new standard), HTML5 game development is really expensive and sometimes impossible.
Time will show.