As I wrote in a previous article, using Flash for your photography website is a very bad idea with some very negative consequences. Now Adobe is announcing end of life for Flash.
This comes as excellent news for the modern web developer and it won't be long before browsers will totally cease support for it, effectively breaking any websites that are still using the outdated technology. If it wasn't enough before to make sure you port your website over to a modern and more standards-compliant format, this is another wake up call and warning to act.
Flash has never been successful on mobile with Apple never supporting it (for good reason). The UI that folks would develop in Flash often relied heavily on mouse events, such as rollover, which doesn't work on touchscreen devices. Photography website designers should pay special attention to this, as a great many of our customers (namely high school seniors) don't even use a computer, and everything is done on mobile devices. Many modern web developers actually now develop with a "mobile-first" priority now, instead of the other way around.
There's still time — act now and make sure your website is modern and Flash-less. You can read Adobe's press release announcing their plans here.