docs/releasenotes/5.1.0.rst
Optional channels for TIFF files ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Pillow can now open TIFF files with base modes of RGB, YCbCr,
and CMYK with up to 6 8-bit channels, discarding any extra
channels if the content is tagged as UNSPECIFIED. Pillow still does
not store more than 4 8-bit channels of image data.
Append to PDF files ^^^^^^^^^^^^^^^^^^^
Images can now be appended to PDF files in place by passing in
append=True when saving the image.
New BLP file format ^^^^^^^^^^^^^^^^^^^
Pillow now supports reading the BLP "Blizzard Mipmap" file format used for tiles in Blizzard's engine.
WebP memory leak ^^^^^^^^^^^^^^^^
A memory leak when opening WebP files has been fixed.