It's been a longer-than-usual wait for details regarding this year's PlayStation Experience event, but the two most important details appear to have leaked this afternoon.
As shared on NeoGAF, last year's page for buying tickets has been updated with a new header image that contains a location and dates. According to that, PlayStation Experience 2016 will take place on December 3-4 in Anaheim, CA.
The page was briefly taken down, though it's unclear if that was due to the information being shared sooner than intended. As of this writing, the page is accessible, but attempting to register leads to a server error.
PSX is an annual fan event that began in 2014. It's been held in early December for its first two years, and has changed locations both times--it was in Las Vegas in 2014 and San Francisco in 2015. Last year's event brought with it a lot of news, including details and trailers for Uncharted 4, Rez Infinite, Final Fantasy VII Remake, Street Fighter V, and Nioh. There's not yet any word on what will be at this year's show, but you can expect to have some idea in advance of the event.
Sony has not yet made any formal announcement about PSX 2016, but we'll report back as soon as it does.