Version 1.12.0.dev44+gf337a0ddf (development) (2026-01-17)

Bugfixes

• Preserve kit_system_id in forward-solution Info, by :newcontrib: ‘Melih Yayli’ (#13520)

• Fix bug preventing mne.time_frequency.read_spectrum() from reading saved mne.time_frequency.Spectrum objects created from mne.time_frequency.EpochsSpectrum.average(), by Thomas Binns. (#13521)

• Fix bug where mne.chpi.refit_hpi() did not take gof_limit into account when fitting HPI order, by Eric Larson (#13525)

• Fix bug preventing reading of mne.time_frequency.Spectrum and mne.time_frequency.BaseTFR objects created in MNE<1.8 using the deprecated subject info birthday tuple format, by Thomas Binns. (#13526)

• Fix bug where invalid date formats passed to mne.Info.set_meas_date() were not caught, by Thomas Binns. (#13528)

• Fix bug with mne coreg where interactively altered MRI fiducials were not used when scaling a surrogate subject, by Eric Larson. (#13539)

• Fix bug with mne.viz.plot_evoked() where channels were plotted above axis spines, by Michael Straube. (#13549)

• Fix bug with montage test error message checking, by Eric Larson. (#13579)

New features

• Add support for multi-wavelength NIRS processing to mne.preprocessing.nirs.beer_lambert_law(), mne.preprocessing.nirs.scalp_coupling_index(), and SNIRF reader mne.io.read_raw_snirf(), by new contributor Tamas Fehervari. (#13408)

Other changes

• Remove legacy Python-version compatibility checks in mne.utils.misc._empty_hash now that usedforsecurity=False is always supported, by new contributor Varun Kasyap Pentamaraju (#13566). (#13566)

• Fix deprecation of setting a shape on an array directly in numpy 2.5+, by Mathieu Scheltienne. (#13585)

• Documentation improvement for eSSS in docstring mne.preprocessing.maxwell_filter() and in the MaxFilter example by Simon Kern. (#13591)

• make mne.sys_info() work on Windows systems with Powershell version 7+, by Marijn van Vliet (#13593)