How the Stacks 2.1 Transition Impacts Stacking (Source: Hiro Systems) The day of the Stacks 2.1 upgrade approaches! Sometime around January 17th, if SIP-015 is approved, the network will activate a number of stacking improvements. For developers building apps with stacking capabilities or integrations, the upcoming 2.1 changes to stacking will impact the user experience, and in this post, we will walk through the 2.1 transition so you can understand what will happen and provide a more seamless experience for your users. Read more 👇