LTspice 24.1 is beta is available now:

https://LTspice.analog.com/download/24.1.0/LTspice64Beta.msi

NOTE: As requested by some in this group and elsewhere, the installer installs two executables: LTspice 24.1 Beta and LTspice 24.0.12. There will be icons for both on your desktop. Both LTspice 24.0.12 and 24.1 can be used on the same machine, but don't use both on the same schematics at the same time.

What’s New in LTspice 24.1 beta

• Improved performance and convergence
• Add .savestate and .loadstate simulator directives to save and restore the complete transient simulation condition
• Add .option debugtran to add report in log file to help identify convergence challenges
• Enhanced netlist syntax checking
• Add support for directory hierarchy for symbol search paths and schematic directory
• Add support for environment variables in Settings > Search Paths
• Add "All" symbol directories view in Place Component dialog
• Changed default integration method to Trapezoidal
• Remember waveform compression settings (under Settings > Compression) between LTspice invocations
• Always accept “3k4” notation as 3.4k (no longer optional)
• Allow device flags to be set to zero for ease of parameterization
• Updated FRA example fra_eg1
• Updated Help documentation
• Bug fixes