As I start studying for my VCP in vSphere 5.0 (VCP510) I have started creating and will be updating this page with the resources I have and will be using.
Exam Blueprint
First of all I would suggest starting with the exam blueprint, which can be found on VMware’s MyLearn Site, a number of the resources below are taken from this document.
http://mylearn.vmware.com/mgrReg/courses.cfm?ui=www_edu&a=det&id_course=103110
VCP Path Options
Below is a diagram taken from the blueprint which shows the various upgrade options.
Recommended Reading
VMware vSphere 5.0 Basics Document
VMware vSphere 5.0 Installation and Setup
vCenter Server and Host Management Guide for vSphere 5.0
VMware vSphere 5.0 Examples and Scenerios
Installing and Admnistratoring vSphere Update Manager for vSphere 5.0
VMware vCloud Requirements for a Cloud
VMware vCloud Service Definition for a Public Cloud
VMware vCloud Service Definition for a Private Cloud
VMware vSphere 5.0, Licensing, Pricing and Packaging
VMware vSphere Networking Guide
VMware vSphere Storage Appliance Installation and Configuration Guide
VMware vSphere Storage Appliance Administration Guide
Installing and Configuring VMware Tools
VMware Virtual Machine Administration Guide
vSphere 5.0 Availaibilty Guide
vSphere Resource Management Guide
vSphere 5 Command Line Guide for Service Console Users
vSphere 5 Configuration Maximums
Recommended Blogs
Simon Long is once again updating his mock exams to cover vSphere 5.0, be sure to check out his blog and take the mock exams to see how you get on.
Another legendery resource for VCP exams is Forbes Guthrie’s vReference site, Forbes is currently in progress of updating his reference card to vSphere 5.0
Eric Sloof has a large amount of resources not only on his blog but on his podcast covering vSphere 5.0’s new features amongst other content
http://itunes.apple.com/podcast/online-vmware-training/id415180540
Scott Vessey over at vmwaretraining has a large amount of resources as ever, check out his VCP 5.0 dedicated page
http://vmwaretraining.blogspot.com/2011/10/vcp5-information-and-preparation.html
Andrea Mauro at vInfracstructure.it has created a a detailed VCP5 study guide on his blog
http://vinfrastructure.it/en/certifications-on-virtualization/vcp/vcp5/
Virtualised Reality 
Thanks for the mention.