Am I reading this right? There's another Bitcoin fork in December?
Yes (on November 16), but you might not actually end up with 2 coins long term. It's complicated. One group (Segwit2X) is trying to upgrade Bitcoin with bigger blocks (2MB vs the current 1MB) to reduce transaction costs and delays. The other side, No2X or Bitcoin Core, believes bigger blocks can put Bitcoin's censorship resistant properties at risk. The Segwit2X side wants Bitcoin to behave more like a payments system. The Bitcoin Core side instead want it to remain only a store of value. The miners so far are preferring Segwit2X because they believe that they could make more money in the long run with bigger blocks. The end users are currently valuing Bitcoin Core higher because it is Bitcoin for now. I don't think most end users truly understand the benefits, and risks, of Segwit2X at all.
I personally think that upgrading a tiny block size to a slightly less tiny blocksize is a fair compromise to try to fix some problems that have been plaguing Bitcoin for a while, but Bitcoin Core doesn't see it that way. All the infighting from both sides could do more harm than good to Bitcoin in the short term. The whole thing has been very poorly explained. They all need to do a much better job of communicating this to the average Bitcoin holder who doesn't know much about the technology.