Version 8.5 Alpha 1 is out!

• Closures and first-class callables in constant expressions.
• Backtraces available on fatal errors.
• #[\NoDiscard] attribute to highlight the importance of consuming a function’s return value.
• (void) cast to intentionally disregard a value.
• Support for casts within constant expressions.
• Introduction of the pipe operator.
• New array functions: array_first() and array_last().
• PHP CLI now supports “–ini=diff” to show changes from default INI settings.