Notes for Release 4.40 Estimated reading: 1 minute 1021 views Over the past weeks we have been working on improvements to Cellosign platform. In this post you can see a list of what has been changed, updated, and/or what bugs have been fixed. Release rollout schedule Stage environment: Scheduled for release on: 12/05/2026 Production & Pre-Production Environments: Scheduled for release on: 25/05/2026 Enhancements PDF Signing with HSM We have upgraded our PDF signing process to utilize a Hardware Security Module (HSM). This move represents our commitment to industry-leading security, shifting our digital signatures to a hardware-backed environment. While every PDF we produce is fully secured and tamper-evident, this upgrade adds a new layer of hardware protection for future documents. Please be assured that all previously generated PDFs remain completely valid and secure, as they were produced using our previous high-standard security protocols. Bug fixes N/a Security Security patches and CVEs Maintenance N/A Notes for Release 4.40 - PreviousRelease managementNext - Notes for Release 4.40Notes for Release 4.39