Release Date: 9th February 2026 This release introduces a few clarifications and bug fixes based on community reports and the webinar on Friday 23rd January. What's New Data Pipes: added starting friction coefficient for pipes already existing in 2000. Code Evolve the dynamic properties and save the system status after the evolution. What's Changed Data Connections: Corrected the ages and added the historical period changes. Water prices & Inflation: Historical data now starts in 1999, as prices are adjusted every first of January based on the pricing adjustment policy, which in the historical period was "by_inflation". Thus 'prices in 2000' are 'prices in 1999' by 'inflation in 1999'. Costs: Historical data now starts in 2000. Costs for subsequent years can be obtained by applying inflation. (Note: in the previous release, they were reported for year 2025, but were actually for year 2024, as costs in 2025 will depend on inflation in 2025, which is unknown). Minor: The municipalities' associated demand patterns have been formatted like all other exogenous variables (note: in future stages, new patterns may appear and municipalities can be associated with different patterns through this variable). Overall: recalibarated pipe options and sources capacities. Code Fix: Corrected Zenodo download and versioning of the data folder. Rules and Information (Website) Updated the dates to allow for more time in the first stage, as decided during the community webinar on Friday, January 23rd, based on participant feedback. Important Notes Youtube channel and Q&A. We will make more videos on how to use the evaluator