# BESS Release 2.1.0
These changes went live on Saturday 15th March 2025
This release includes:
# Default to new user interface
- For all users and for all projects
- All new projects created in BESS-9
- All Tool Notes available via new interface documentation portal
- User Guide separated from Tool Notes in documentation portal
# BESS Engine
This release does not include a new BESS engine.
However, where Release 2.0.0 allowed the creation of new projects in either BESS-8 or BESS-9 engines, Release 2.1.0 allows the creation of BESS-9 projects only.
For more information on the BESS-9 changes, see the 2.0.0 Release Notes
2.0.0 →