Google AdWords announced on Google+ that they’ll discontinue Flash in favour of HTML5 ads from January 2017. Why does it matter to you? Well, HTML5 loads faster, drains less battery and generally looks nicer while managing to do so.
Flash has been around but always been unimpressive. The possibilities were endless, but the implementation were quite bad. Even Adobe was tired of Flash and the flack it brought in. They recently redirected the technology into an animation platform to Animate CC, accepting that HTML5 is a more apt medium for the we.Apple dropped Flash at the fist instance they could and now Google is following suit.
Stating that Google display ads will go 100% HTML5, AdWords said that advertisers will be encouraged to use HTML5 and denied from submitting Flash advertisements from June 2016.
If you need to move your ad from Flash to HTML5, there is a guide from Google to help with the transition on the AdWords support page.