Newlib 4.4 is coming roughly one year after Newlib 4.3. With Newlib 4.4 there is long double support for i386, AArch64, and x86_64 architectures added from FreeBSD. Plus there is support for new RISC-V ISA extensions, an Xtensa architecture port added, and other improvements. The Newlib 4.4 release highlights come down to:
*** Major changes in newlib version 4.4.0:
- long double support for i386, aarch64, and x86_64 added from FreeBSD
- RISC-V Zfinx/Zdinx extension support
- wildcard support added to allow arbitrary include dirs to be specified for a platform
- Xtensa port added
- printf family helper functions split out into separate files to save space when linking
- wide-oriented I/O fixes including proper split of byte and wide-oriented stdio functions
- support added for RISC-V long double math
- fixes for c99/gcc-14 warnings treated as errors in multiple platforms
The brief Newlib 4.4 announcement can be read on the Sourceware.org mailing list.