B2INST version 3 upgrade

Documentation placeholder. B2INST-specific guidance for this topic still needs to be verified and written.

B2SHARE counterpart: overview/version3.md in b2share_eudat_docs (b2share/overview/version3.md in eudat-documentation).

Content to complete:

• Confirm the B2INST rollout schedule and migration arrangements for existing records, Handles, communities, and metadata extensions.
• Explain effects on accounts, authentication, and existing API tokens.
• Document user-facing changes, integration migration steps, and where to obtain migration support.

The API changes are documented in the conceptual comparison, JSON comparison, and API submission guide.

Last update: 07.10.2026

Last review: 07.10.2026