I don't know, and like you, haven't seen anything.
Here's what I do know.
Android dropped ALL support for Flash Playe June 2012 and Adobe continued to develop and release security updates for the older Android Flash Player versions up till September 10 of this year.
Support for Linux ended with version 11.2, but security fixes for Linux Flash Player are still being developed and released.
Given the still-widespread use of XP in schools and corporate environments, I'd have to say that support (at least security updates) will go on for a while after next June14 when Microsoft officially "sunsets" XP. How long that will be is not info I have.