Sidechain in Cubase 4.5/5 with OS 3.0.2.02 beta almost possible?

[Sonis]

I just installed the new beta version of VC and when I load up VC in Cubase I noticed that the icon that shows it's a VST3 plugin has changed from three bars to a little box with an X in it, AND when I load up said plugin the box to activate sidechain input is there, but VC is still throwing the popup that says the host doesn't fully support sidechain input when I try to swap it to 3 out/1 in on the config page.

Does this mean Cubase users should be expecting sidechain support soon finally?