Latest ChatGPT Capabilities for European Business Teams: GPT-5.5 and What to Do Next

TL;DR: GPT-5.5 rolled out in ChatGPT in April 2026. Latest capabilities for European business teams, EU data compliance checklist, and a buyer decision guide. Why this matters: GPT-5.5 rolled out in ChatGPT on 2026-04-23, after OpenAI retired GPT-5 ...