My white paper, Implementing Symmetrix Virtual Provisioning with VMware vSphere has been updated and published to emc.com:

http://www.emc.com/collateral/hardware/white-papers/h6813-implting-symmetrix-vrtl-prvsning-vsphere-wp.pdf

Updates includes:

1. Discussion on new support for the VAAI UNMAP primitive also known as dead space reclamation
2. Enginuity 5876 Enhancements such as TimeFinder/VP Snap and Thin Device Compression
3. Updated recommendations for vSphere 5.1