Cover Letter for OpenVMS AXP Version T6.1-FT4

This document acts as a cover letter for the second external field test release of the OpenVMS AXP operating system, version T6.1-FT4 (previously numbered T2.0). It informs customers about new features such as TMSCP tape serving, media management extensions, and KFMSB support for specific systems. The document provides detailed instructions on the kit contents, which include the OS, documentation, and various product authorization keys (PAKs). It also provides crucial guidance on mandatory updates, known issues during upgrades, such as file system mounting conflicts, and specific procedures for accessing documentation in PostScript and Bookreader formats. Additionally, it lists compatibility information for various layered products and offers guidance for VMScluster configurations, performance monitoring, and device driver support.