According to @muneeb, Stacks Brainiacs have released an overview of the fully self-custodial sBTC upgrade, known as the Stacks Satoshi upgrades. This upgrade allows users to hold sBTC in a completely self-custodial manner while it remains on the Layer 2 Stacks chain, significantly enhancing security and user control. For traders, this innovation is set to reduce custodial risk and could lead to increased trading volumes and DeFi activity on the Stacks network. The upgrade positions Stacks as a more attractive choice for decentralized Bitcoin trading and DeFi platforms, potentially impacting overall Bitcoin liquidity across Layer 2 ecosystems (source: @muneeb on Twitter, May 23, 2025).