I've been meaning to highlight a number of new RedBooks that are available, and more are coming.
There's an interesting blog post on 5 things to know about the new IBM POWER8 architecture.
IBM POWER8 is the first generation of hardware designed for big data in the cloud
POWER8 is 4 times faster than the previous generation
POWER8 is the first Linux-based ecosystem
Superior cloud economics
CAPI port and NVIDIA partnership
There's a really good technical overview of the latest Linux-only POWER8 servers
Chapter 1. General description
Chapter 2. Architecture and technical overview
Chapter 3. Virtualization
Chapter 4. Continuous availability and manageability
For a performance and optimization centric RedBook, IBM has a workbook specifically targeted for POWER8.
Chapter 1. Optimization and tuning on IBM POWER8
Chapter 2. The POWER8 processor
Chapter 3. The POWER Hypervisor
Chapter 4. AIX
Chapter 5. IBM i
Chapter 6. Linux
Chapter 7. Compilers and optimization tools for C, C++, and Fortran
Chapter 8. Java
Chapter 9. DB2
Chapter 10. WebSphere Application Server
Appendix A. Analyzing malloc usage under AIX
Appendix B. Performance tooling and empirical performance analysis
The IBM RedBooks continue a tradition of delivering practical and useful information. More RedBooks are coming and we'll make sure they are available here.