This document summarizes new features in OpenNebula 5.4, including improvements to its integration with vCenter. Some key highlights are:
1) Enhancements to storage functionality like persistent/non-persistent images, disk resizing, and improved Storage DRS support.
2) Increased networking capabilities such as creating port groups and configuring VLAN IDs dynamically.
3) Significant speed improvements through caching and other optimizations, providing access to vCenter objects up to 100x faster.
4) Additional fixes that resolve prior limitations like attach/detach poweroff state and proper cleanup of terminated VMs.