• The racket-lang.org website no longer distributes Racket BC bundles,
  but it includes pre-built bundles for two flavors of ARM linux,
  AArch64 and 32-bit ARMv6 VFP.
• XML structures are serializable.
• Scribble's HTML generation conforms better to modern standards.
• Racket uses Unicode 16.0 for character and string operations.
• The redex-check default generation strategy always uses random
  generation to supplement the enumerator.
• DrRacket supports the use of shift-tab to go backward to previous
  indentation positions.
• The macro stepper supports the string-constants library, allowing
  internationalization of the stepper itself.
• The struct form supports #:properties prop-list-expr, making it
  more convenient to attach multiple property values to a structure
  type.
• Build-system improvements support containers registered at Docker
  Hub to build for all platforms that have downloads from the main
  Racket download site; improvements also support Unix-style builds
  for Mac OS in the style of MacPorts.
• The expt function produces a more accurate result when its first
  argument is a flonum and its second argument is an exact integer
  that has no equivalent flonum representation than it did in prior
  versions.
• TCP ports use SO_KEEPALIVE correctly.
• Unsafe code can use “uninterruptible mode” instead of “atomic mode”
  to allow futures to run concurrently while preventing interruptions
  from other threads.
• The net/imap library supports IMAP's move operation.
• There are many other repairs and documentation improvements!

The following people contributed to this release:

Bob Burger, Bogdan Popa, Brad Lucier, Carl Gay, Chloé Vulquin, D.
Ben Knoble, Gustavo Massaccesi, Jacqueline Firth, Jade Sailor,
Jarhmander, Jason Hemann, Jens Axel Søgaard, Joel Dueck, John
Clements, jyn, Jörgen Brandt, Mao Yifu, Marc Nieper-Wißkirchen,
Matthew Flatt, Matthias Felleisen, Mike Sperber, Noah Ma,
paralogismos, Pavel Panchekha, Philip McGrath, Robby Findler, Ryan
Culpepper, Sam Tobin-Hochstadt, Shalok Shalom, Stephen De Gabrielle,
Steve Byan, Vincent Lee, Wing Hei Chan, and ZC Findler.