New company logo and controlled documents

Answer
If your logo is part of the documents’ identification and if your logo was changed, your organization will have to update documentation. Since your next surveillance audit will take place in less than a month perhaps that update should be planned to take place not in a moment but along a period of time. So, easier documents to update can be updated right away, for other documents you can develop a plan start to implement it and show it during next surveillance audit. For example, auto companies sometimes make changes in their component drawings and allow suppliers to use previous versions until stock of those versions goes to zero.

The following material will provide you more information about ISO 9001 and document control:
New approach to document and reco rd control in ISO 9001:2015 - https://advisera.com/9001academy/blog/2015/06/30/new-approach-to-document-and-record-control-in-iso-90012015/
- Enroll for free course - ISO 9001:2015 Internal Auditor Course - https://advisera.com/training/iso-9001-internal-auditor-course/
- book – Managing ISO Documentation: A Plain English Guide - https://advisera.com/books/managing-iso-documentation-plain-english-guide/