I've seen stories detailing how they were ready to switch to PoS by "the end of the year" as far back as 2017. Ethereum has been PoW for it's entire existence,

I've seen stories detailing how they were ready to switch to PoS by "the end of the year" as far back as 2017. Ethereum has been PoW for it's entire existence, and has also been promising PoS for almost 3/4 of that time. It's not impossible that this time it's really true, but I'll believe it when it happens.