Thanks to the engagement driven by the community and the SIP authors, a few noteworthy changes were made to the proposal and are now reflected in the new draft on Github:
Updates to the boost proposal. The original draft included a temporary 500 STX per block boost for the first six months of the program, funded through new emissions. A number of community members pushed back on this, arguing the boost created unnecessary dilution and that the Endowment was a more appropriate funding source for a growth incentive of this kind. After reviewing the options, SIP authors decided to remove the boost from the emissions schedule entirely. The proposal now moves forward with just the long-term adjustment: restoring the block reward to 1,000 STX. If a boost is needed to support the program's growth at some point, it would be funded directly by the Endowment through sBTC fed into the PoX-5 contract, providing a more targeted and on-demand approach that avoids permanent protocol changes or unnecessary dilution.
New hard fork clause added. In the new draft, the reserve fund is built as accrue-only -there's no public spend function, and the only path to draw on it is through a consensus change, which means a hard fork. This keeps the contract's attack surface minimal, prevents any party from having unilateral access, and reflects the reality that a draw isn't expected to be needed during the bootstrap phase at all.
But if circumstances did require it, getting there would mean re-coordinating the full community around a vote they've already effectively taken by approving this SIP. The pre-authorized hard fork procedure removes that friction. STX holders can signal advance consent to a future reserve-access hard fork now and revoke it at any time. A sufficient pre-authorization threshold means coordination can begin quickly if needed, without relitigating a principle the community has already endorsed.