Schnorr Signatures

Taproot is nearing the finish line.
Taproot Update: Bitcoin Users Home In on Activation Plan, Date Still TBD
The meeting ended with rough consensus in favor of BIP8 (false), as well as with approval of two possible methods to put this BIP into motion.
Taproot is nearing the finish line.

Distribution of Bitcoin hashrate by support for Taproot activation
Majority of Bitcoin Hashrate Signals Support for Taproot Scaling, Privacy Upgrade
Over 50% of Bitcoin's hashrate now supports the "uncontroversial" upgrade.
Distribution of Bitcoin hashrate by support for Taproot activation

keys
Blockstream Is Working on Simpler, More Private Multisig Bitcoin Transactions
Made possible by Taproot, MuSig2 is designed to make multi-signature Bitcoin transactions less complex without sacrificing privacy.
keys

(Andrew F. Kazmierski/Shutterstock)
The IRS Wants to Know More About Privacy-Enhancing Crypto Coins, Tools
America's tax collector is laying the groundwork for a possible assault on privacy-enhancing cryptocurrency technologies.
(Andrew F. Kazmierski/Shutterstock)

Poelstra, Blockstream
One Mathematician's Mission to Boost Bitcoin's Privacy (And Soon)
Blockstream researcher Andrew Poelstra's efforts to create a more private bitcoin aren't about extremes, but about protecting the everyman.
Poelstra, Blockstream

Pencil
Bitcoin Devs Release Long-Awaited Schnorr Paper for Scalability Gains
Bitcoin devs have released the first paper on the Schnorr multi-signature protocol, which, if implemented, would increase bitcoin block sizes.
Pencil