27 August 2026

Production release: 27 August 2026
Staging release: 20 August 2026

Version: 2.27.0

This feature is a flagged release item.

Summary Quality Improvements: Enhanced summarization prompts to produce higher-quality, more accurate summaries.
Enhanced Spreadsheet Support: Improved performance and structure preservation when summarizing CSV and XLSX files, including multi-sheet workbooks.
Default AI Processing: AI processing is now enabled by default for new spaces, while maintaining the ability to explicitly opt out.

Presigned URL Multipart Uploads: Multipart upload and download now use S3 SigV4 presigned URLs retrieved via a dedicated, paginated /parts endpoint, replacing CloudFront wildcard signed URLs, to meet FedRAMP compliance requirements.
Internal API Removed: Removed the internal API used for AWS/Azure cross-calls; File Service now performs this work directly, reducing network calls and pseudo-mTLS attack surface.
FIPS Endpoints: The boto3 client now uses FIPS endpoints in US/FedRAMP regions.
New FileSets API: Added a new /filesets endpoint for retrieving file content via hashed, expiring authorization tokens, without relying on CloudFront wildcard URL mechanics.

Fixed timeouts and pagination failures when listing folder children or exporting folders containing large numbers of items.
Fixed an issue that caused summarization and vectorization to fail for legacy .xls files.
Summarize and vectorize requests for empty or whitespace-only files now return an immediate validation error instead of queueing an asynchronous job.