In my Browser, I see Media, Plugins, Notes. Where did my Synths go?

You need to be on PlugIns, then click the little piano icon to see Instruments.

Alt+9

I see that. But I used to have 3 sections to my browser: media/plugins/synth.
 
Couldn't find my Synth Rack (Alt 9) - I have two screens. It was minimized in my smaller screen.
 
But... there is a Synth browser. Here is a Sonar X3 doc page:

 
Did this go away with Platinum? I thought I had it still.

This has changed in a recent update. The info tab is now, where the synth rack tab was. Synth rack is now its own dockable window outside of the browser.