# Vitest v0.0.66 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v0.0.66
- **Released:** Dec 12, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v0.0.66/

## Executive Summary (TL;DR)
Vitest v0.0.66. Source highlight: **options:** defaultTimeout (#85) (68ed9df)

## New Features
- **options:** defaultTimeout (#85) (68ed9df)
- dev mode by defalt, close #84 (4742496)