[made]

I think Eucon is so complex that nobody can predict where Avid has to do changes to get things working.
So while I'm sure you will get all new EuCon releases for S3, I doubt you get all new features...

Like the PT Mixer is following the controller only in PT12 not 11.
Have to test if VCA spill is in 11...

That's from Avid:

With EuControl 3.3 we’ve also added VCA Spill to S3. There are a couple of powerful ways you can spill members to the surface and even a way to recall the last spilled VCA for quicker access.

We also managed to squeeze in the following fixes including the much requested fix for SHIFT + Fader touch not resetting to 0db!

What’s Fixed
• Shift + Fader touch does not set fader to 0dB (EUCON-2883)
• Meters on VCA strips do not update (appear) when creating a new VCA Master and assigning tracks (EUCON-3652)
• Changing Track meter width in Pro Tools does not update surface meters correctly (EUCON-3667)
• Dragging and dropping applications into EUCON Prefs not working in 3.2.2 release (EUCON-3689)
• Soft Key Icons in EuControl settings are pixelated on Retina displays (EUCON-3486)

OS Compatibility
• Windows 7 64-bit
• Windows 8.x 64-bit
• Mac OS 10.10.3+
• Mac OS 10.9.5

Pro Tools Compatibility
• Pro Tools 11.3.2+
• Pro Tools 12.1+
*NOTE: If you use EuControl 3.3 with Pro Tools 11.3.1 or earlier, meters will not appear on the control surface nor Pro Tools | Control app.