Appendix: Implementation Status Matrix

This appendix mirrors shared/implementation-status.md for readers of this reference.

Please consult: SYX Language Feature Implementation Status Master Table (SYX 117.0 · Phase 139)

That table lists the Implemented / Partially implemented / Planned / Not implemented / GA status by domain, and takes tests and source as ground truth.

Update policy: shared/implementation-status.md is revised with the current Phase; the appendices of both books keep only a link, to avoid duplicated maintenance.

Key changes in the current Phase 139:

• Language surface: multiline / tuple / nested path / closed range / Character / call labels
• SIMD16 i8x16 all_true/any_true (guest-v22) plus the existing guest surface
• SynUI deferred; Farm/Dist freeze v19
• audit 2600/3050; cache syx-cache-v1; native AOT LLVM only
• Details in language-guide Appendix A

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See also → Language Guide Appendix A · Implementation Status Master Table · architecture-decisions.md