WolfXL Release Notes¶

This public summary is versioned with the documentation site.

v2.2.0 - 2026-09-26¶

Native calculation binds date, datetime, time, and timedelta values as Excel serials, so workbooks with date inputs no longer fall back to the Python evaluator.
Tables read in modify mode can grow by range and by appended columns.
Python 3.14 wheels for Linux, macOS, and Windows.
Wheels include third-party notices for bundled components.

Added a native Arrow data bridge with ordered multi-sheet writes and explicit pandas and Polars adapters, conservative migration diagnostics, package-preserving verified operations, and immutable headless calculation diagnostics for spill and what-if workflows.
Added content-addressed monthly operating-review jobs with immutable receipts and lineage, deterministic replay or republish, and no-replace paired publication. A spawn-isolated production runner provides bounded concurrency, cancellation, interruption recovery, and deterministic item and run receipts.

Added native-first formula recalculation with dynamic-array formulas, cross-sheet dependency handling, calculation selection, dependency inspection, and typed diagnostics.
Added rendering APIs for workbook and worksheet PDF, sheet and range PNG or PDF, and chart PNG, PDF, JPEG, or SVG output.
Added a headless reporting workflow that stages paired XLSX and PDF outputs before publication, recalculates after supported pivot recomputation, and returns immutable phase and artifact diagnostics.
Added bounded conversion workflows for XLSX, ODS, XLSB, XLS, PDF, PNG, HTML, TXT, CSV, and TSV, with explicit preservation and loss reporting.
Added immutable SDK diagnostics, capability inspection, binary load helpers, and explicit byte and stream save entry points.
Added picture-in-cell values, DrawingML text boxes and basic shapes, connectors, groups, macro-free form controls, x14 sparklines, and ChartEx Waterfall charts across create, load, modify, and native rendering paths.
Expanded formula-cache, style, chart, image, VBA-linked structure, and package-preservation behavior.
Moved WolfXL 2.1 distribution to the authenticated WolfXL package index.

See the 2.1 Overview and Upgrade Guide for the customer-facing version boundary and upgrade command.

Added Python Worksheet.schema() and classify_format() surfaces backed by wolfxl-core, plus cross-surface parity tests against the wolfxl schema CLI output.
Added the PyO3 wolfxl_core_bridge groundwork so Python callers can share classifier and schema inference logic with the Rust CLI/core path.
Added wolfxl-core 0.8.0 and wolfxl-cli 0.8.0 multi-format dispatch for .xlsx, .xls, .xlsb, .ods, and .csv.
Fixed explicit bottom-alignment reads so Excel-authored bottom alignment round-trips instead of collapsing to the default.