On May 18th VMware announced the end of the road for the C# vSphere Thick Client. The next version of vSphere the thick client will not be available. VMware has been building up to this moment and previously announced they wanted to move to a web based client to have maximum compatibility and mobility. The current versions of the vSphere thick client will remain supported (5.5, 6.0) until their end of life cycle. So what does the future look like for the vSphere Client? VMware will keep the existing Flash web client and introduce the HTML5 based vSphere Client. The Flash web client will remain so third party developers can migrate their plugins over to the long term HTML5 client.
The HTML 5 Web Client Fling is available to download and install. It gives a fantastic view of how VMware envisions the new HTML 5 client. There are quite a few limitations in the current form but VMware will have the kinks worked out before it becomes the primary client. Below is how to deploy the v1.6 HTML 5 Client Fling and link to a VCSA:
Full installation instructions can be found here
Deploying the OVA:
Once the OVA is downloaded from the Fling website, login to your vSphere Web Client, right click on the Data Center, then click Deploy OVF Template: