We have a brand new vSphere 5.5 environment and I knew right before going live Update 1 would be released. I generally don't jump on a major update release in production but considering the environment is not yet live, I am considering an exception. It may not be out long enough for much comment but, if anyone has good or bad experiences with this upgrade I'd appreciate any information.
Also include if you went from vCenter 5.5(b) to Update1. In my case it will be vCenter 5.5 to Update1
It worked perfectly for me. I could upgrade both Linux and Windows vCenter Server without any problem.
Curious if you went for this yet? I just upgraded production VC to 5.5 with bits I downloaded two weeks ago, only to find out Update 1 was released last week. Since I have not upgraded any ESXi hosts yet, going to go ahead and upgrade VC 5.5 to U1 later today so I can move forward with U1 ESX hosts. Wish I could report my 5.1 --> 5.5 VC upgrade went flawless, but ran into a number of issues during the upgrade. Hoping the U1 is uneventful.
I did the upgrade earlier this week and it went very smooth with no issues.