On 18 October 2025, the 4-metre Multi-Object Spectroscopic Telescope (4MOST) facility, installed on the VISTA telescope at the Paranal Observatory, obtained its first light. This is a crucial milestone towards the start of scientific observations with this new spectroscopic facility. The First Light observations exemplify the unique capabilities of 4MOST. They covered an area of the sky containing the Sculptor Galaxy and the NGC288 star cluster showing 4MOST ability to observe a very large field of view and its capability to get spectra for many very different objects and science cases simultaneously.

ESO received 1285 valid proposals for observations in Period 117 (1 May 2026 – 30 April 2027). The deadline for proposal submission was 23 September 2025. On the VLT, the most demanded ESO instrument was ESPRESSO with a request of 5846 hours, followed by MUSE (5519 hours), and XSHOOTER (5086) hours. HARPS/NIRPS on the ESO 3.6 metre telescope was the most demanded instrument at La Silla, with a combined request of 4985 hours.

This data release presents the first instalment of the SEDIGISM (Structure, Excitation and Dynamics of the Inner Galactic Interstellar Medium) survey, a large spectroscopic programme mapping molecular gas across the inner Milky Way. The survey was conducted with the APEX 12-m telescope between 2013 and 2017 and covers approximately 84 deg² of the southern Galactic plane, with continuous coverage from −60° ≤ l ≤ +17° at |b| ≤ 0.5°. Additional regions extend the latitude coverage (e.g. towards the Central Molecular Zone, RCW 120, and the Nessie filament) and include a dedicated 2 deg² field around W43 for cross-comparison with northern surveys.

The ESO Data Processing System (EDPS) is a new system to run the ESO data reduction pipelines. It will replace EsoReflex as the recommended way to process ESO raw data in 2026. An Alpha version of the Graphical User Interface has been released and can be used to run ESO pipelines for any of the currently active VLT instruments. While the documentation is still incomplete, the software itself is fully functional. It is significantly more performant than EsoReflex, and in some cases delivers better results due to better data organisation, default setup or workflow. ESO encourages the use of the EDPS GUI for new data reduction projects. Requests for support or any feedback can be submitted via the ESO support page.

ESO is extending the deadline for abstract submission for the conference "VLT beyond 2030" to 26 September 2025. The meeting will take place in Garching near Munich (Germany) and virtually on 26-30 January 2026.