No, you didn't accidentally wake up 10 years ago; the PlayStation really did receive a brand new firmware update in the year 2020. Just like the Nintendo 3DS did earlier this year, the PS3 has gotten an update out of nowhere, bringing the system to version number 4.87. Sony says that this new firmware serves to improve the console's system performance, but what that vague statement really means is that the PlayStation 3 got its update so that it could play the most recent Blu-ray movie discs. At least, according to the RPCS3 PS3 emulator team.
Anyone still using their PlayStation 3, and a hacked one at that, will want to refrain from updating to 4.87, though scene hacker Joonie has put out HFW 4.87.1, and says that PS3HEN should be updated relatively soon, as the new firmware doesn't make any changes to the kernel. As a reminder, HFW (hybrid firmware) does not mean CFW (custom firmware). SEN Enabler has also been updated to support spoofing the PlayStation Network for those not on 4.87.