Core protocol developer Wladimir van der Laan has been the public leader of the small centralized dev team that secretly controls BTC. He has announced he is going to fade into the background on the project.
On January 21, a double spend of $21 happened on the BTC network. Kurt Wuckert Jr. explains why there is a lot more than meets the eye in this attack
BitMex Research’s ForkMonitor recently detected a split in the BTC chain, where the temporarily leading chain was re-org’d, and therefore 1 block was orphaned.
Bitcoin Core’s backlog of transactions has increased as developers are suggesting a reduction in the block size.