This release has been tracked in v47.0 group of our roadmap project.

Block Device Error Reporting to the Guest

Instead of exiting on I/O errors, the virtio-block device now reports
errors to the guest using VIRTIO_BLK_S_IOERR. It improves the user
experience particularly when the guest rootfs is not backed by the
affected block device. (#7107)

Nice Error Messages on Exit

We now have the chain of errors being reported and printed nicely, when
Cloud Hypervisor or ch-remote exits on errors. (#7066)

Alphabetically Sorted CLI Options for ch-remote

To improve readability, ch-remote now prints help information in
alphabetical order. (#7130)

Notable Bug Fixes

• Error out early when block device serial is too long (#7124)
• Fix partial commands being discarded for virtio-vsock (#7195)
• Disable the broken interrupt support for the rtc_pl031 device to
  prevent spurious guest interrupts (#7199)

Deprecations

• A default IP (192.168.249.1) and mask (255.255.255.0) are
  currently assigned to the virtio-net device if no value is specified
  by users. Such behavior is now deprecated. Users of this behavior will
  receive a warning message and should make adjustments. The behavior
  will be removed in two release cycles (v49.0).