Solana Alpenglow: Activation Starts September 28, and What Delegators Should Check Now

The information provided in this article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry a high degree of risk. Always conduct your own research.The release schedule for Agave v4.3 names September 28, 2026 as the start of feature activation on Solana mainnet. We measured how much stake already runs on the new version today, and explain what delegators need to draw from it. Solana is not switching on Alpenglow at some secret date: the release schedule maintained by the development shop Anza names September 28, 2026 for feature activation on mainnet. If you hold Solana (SOL), in most cases you need to do nothing at all. If you stake by delegating yourself, you have exactly one job, and the date that matters more for it is not September 28 but September 21. This article answers the question of when Solana's Alpenglow activation happens, at the primary source, in three steps: what the schedule actually says, what "activation" means technically, and how far the network stands on the day of this measurement from the state the schedule assumes. The figures on how far the new version has spread were collected by us on mainnet on...