The upgrade is fairly straight forward, if you are going to run Linked Clones, check the ESX and VC pre-recs both need to be U3. also review the TCP Ports that are required for your forward and backend firewalls, they ports have changed. this is all in the View Administartion guide documentation.
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Tom Howarth
VMware Communities User Moderator
Blog: www.planetvm.net
Tom Howarth VCP / VCAP / vExpert
VMware Communities User Moderator
Blog: http://www.planetvm.net
Contributing author on VMware vSphere and Virtual Infrastructure Security: Securing ESX and the Virtual Environment
Contributing author on VCP VMware Certified Professional on VSphere 4 Study Guide: Exam VCP-410
