• RFC 77 (https://gdal.org/development/rfc/rfc77_drop_python2_support.html): Drop Python 2 support in favor of Python 3.6 (#3142)
• RFC 78 (https://gdal.org/development/rfc/rfc78_gdal_utils_package.html): Add a gdal-utils Python package
• New driver:
  • STACTA: raster driver to read Spatio-Temporal Asset Catalog Tiled Assets
• Add /vsiadls/ virtual file system for Azure Data Lake Storage Gen2
• Improved drivers: DIMAP, NITF
• Number of improvements in Python bindings
• Add automatic loading of configuration options from a file
• Add support for enumerated, constraint and glob field domains in MEM, FileGDB/OpenFileGDB and GeoPackage drivers
• Deprecation:
  • Disable by default raster drivers DODS, JPEG2000, JPEGLS, MG4LIDAR, FUJIBAS, IDA, INGR, ZMAP and vector driver ARCGEN, ArcObjects, CLOUDANT, COUCHDB, DB2, DODS, FME, GEOMEDIA, GTM, INGRES, MONGODB, REC, WALK at runtime, unless the GDAL_ENABLE_DEPRECATED_DRIVER_{drivername} configuration option is set to YES. Those drivers are planned for removal in GDAL 3.5
  • Perl bindings are deprecated. Removal planned for GDAL 3.5. Use Geo::GDAL::FFI instead
• Removal of BNA, AeronavFAA, HTF, OpenAir, SEGUKOOA, SEGY, SUA, XPlane, BPG, E00GRID, EPSILON, IGNFHeightASCIIGrid, NTV1 drivers. Moved to (unsupported) https://github.com/OSGeo/gdal-extra-drivers repository.