We are pleased to announce that abstract submission for the Solar Polarization Workshop 11 is now open. SPW11 will take place in Prague from September 8th to 12th, 2025. The primary focus of the meeting encompasses theoretical aspects and modeling of solar polarization, alongside the analysis and interpretation of polarization signals in the solar photosphere, chromosphere, and corona. Additionally, discussions will center on instrumentation advancements and the origin and evolution of stellar magnetic fields.The deadline for abstract submission is May 16th, 2025. Detailed instructions and the submission portal are available on the workshop’s official website.