I posted a thread a while ago (
http://www.neogaf.com/forum/showthread.php?t=1078589) in which I presented evidence of a pattern in how Sony releases major firmware updates to PS4. They seem to alternate six months/five months between major updates.
The first major firmware released on November 13th, 2013 (two days before the release of the PS4. This is Firmware 1.50. Some major things with this were Remote Play and the ability to play Blu-Rays/DVDs, among other important system functionality.
Five months later, on April 30th, 2014, Firmware 1.70 released. This was ShareFactory update, which also allowed users to disable HDCP and stream at 720p.
Six months later, on October 28th, 2014, Firmware 2.00 released. This was the Shareplay update.
Five months later, on March 26th, 2015, Firmware 2.50 released. This was, of course, the long awaited Suspend/Resume update. It also included the Accessibility features.
Sixth months later, on September 30th, 2015, Firmware 3.00 released. This was the update that included YouTube streaming, communities, stickers, etc.
So, does that mean in February (five months after the release of Firmware 3.00) we will see Firmware 3.50 (or maybe 4.00?). And could it have some of the features they're hinting at? Might we get a tease at PSX in December?