Changelog

What's new in Winnow. We ship fast. Here's the proof.

2.5.0

Auto-revert monitor loop & GitOps for gates

  • newAuto-revert monitor loop with config snapshots and last-known-good restore
  • newGuardrail policies for single-threshold, ratio, and composite metrics with mSPRT correction
  • newPromotion gate that auto-graduates entities after a green window
  • newDelayed-signal monitor bindings for judges with hours-of-lag signals
  • newGitOps for gates with manual sync, auto-sync on write, and GitHub App auth
  • improvedAuto-rollback v2 with config-snapshot and monitor-loop architecture (supersedes the March 28 single-arm kill)
  • improvedProduction hardening across boot guards, security headers, login lockout, and Dependabot weekly
2.4.0

PLG Billing Redesign & UX Improvements

  • newPlan comparison cards on billing page with usage proximity warnings
  • newUpgrade buttons for all plan tiers with Stripe checkout integration
  • improvedStandardized page headers, icons, and descriptions across all 23+ pages
  • improvedConsolidated Settings section into Infrastructure navigation
  • fixedIcon consistency between sidebar navigation and page headers
2.3.0

Optimization Agent: Phase 4 Complete

  • newPopulation-Based Training (PBT) proposer for multi-config optimization
  • newBOCPD change-point detection with Normal-InverseGamma conjugate model
  • newContextual routing via LinUCB for per-query arm selection
  • newAlways-valid confidence sequences (Howard et al. 2021)
  • improvedWarm-start Bayesian Optimization with RGPE ensemble
2.2.0

Optimization Agent: Proposers & Executor

  • newOPRO prompt proposer, LLM-driven prompt variant generation
  • newBayesian Optimization parameter search with GP + EI acquisition
  • newModel swap evaluator for automated model comparison
  • newAgent executor with 5-gate safety checks
  • newEmpirical Bayes priors from cross-experiment data
  • newCandidate safety screening for all agent proposals
2.1.0

Optimization Agent: Observer & Foundation

  • newObserver daemon with enhanced CUSUM drift detection
  • newAuto-rollback on critical signal (single-arm kill)
  • newDiscounted Thompson Sampling for non-stationary environments
  • newMulti-metric CUSUM (Hotelling T²) detector
  • newAgent webhook notifications for rollbacks, signals, and proposals
2.0.0

JTBD Navigation & Workflow Templates

  • new6 workflow templates: Feature Launch, Canary, Prompt A/B, Continuous Optimization, Cost Optimization, Content Experiment
  • newRamp schedule engine with health-check gates
  • newPre-flight eval gate for blocking live traffic until offline eval passes
  • new5 autonomy levels with configurable action permissions
  • newPlaybook system (WHEN/THEN/NEVER rules)
  • newGuardrail presets: Relaxed, Standard, Strict
  • newNotification center with alert conditions and digest scheduling
  • improvedNavigation restructured to 4 JTBD-aligned sections
1.8.0

Quality & Evaluation Suite

  • newEval builder with LLM judge and code assertion scoring
  • newDataset management with versioning and import/export
  • newFeedback dashboard for production quality signals
  • newNetwork insights for cross-organization benchmarks