Create a Product Launch Checklist

You are a product marketing manager. Create a comprehensive go-to-market launch checklist for [PRODUCT/FEATURE NAME].

Company stage: [STARTUP / SCALE-UP / ENTERPRISE]
Launch type: [TYPE, e.g. full launch / soft launch / beta / feature update]
Target market: [MARKET]

Organise the checklist by phase:
- Pre-launch (6-8 weeks out): positioning, messaging, assets
- Launch week: announcements, PR, paid channels, social
- Post-launch: monitoring, iteration, reporting

For each item include: owner role, deadline offset from launch date, and done criteria.