There is definitely a lot more going on this year.
A few quick things i spot, and there are more :
GS Music is there all the way from Argentina, and they will be showing their e7 polyphonic analog MPE synth. From a comment in a Synthtopia article on Knobcon is this :
Sean McKee
August 26, 2024 at 9:38 am
I’ll be at the GS Music booth demonstrating MPE with their wonderful e7 polyphonic analog synths being controlled by Embodme Erae Touch and Erae II MPE controllers.
I don’t see Embodme on the list but this looks like a chance to see the latest deveolpments with the ERAE II.
ADDED : GS Music now has a new synth, the Bree6, in both a keyboard and a desktop version. They are both very affordable. ( video ) Scheduled to ship in November.
Oddment Audio is making the short drive down so we can see the progress in their interesting granular synth, Groc set to ship end of the year or early 2025. ( Thread )
I notice ASM is not there for the second year in a row.
Future Retro is there ! News from them perhaps.
ADDED : ( Sept 2 ) Yes TRANSFER and 777 !
This will also be a good chance to see the new MetaModule from 4ms ! Given that VCV is also there perhaps they are coordinating some of their presentations.
ADDED :
As noted elsewhere, likely news on the LaunchKey Mk4 from Novation.
ADDED ( Sept 1 ) :
Eternal Research will be there showing off their Demon Box, exorcizing some spirits and getting ready for a Kickstarter this Fall. ( Thread ) ( Video )
Muse Electronic Instruments will be at the show, with four rather unique MIDI controllers of their own design. The Zen Flute a simple to use wind controller ( post ), the Zen Hemi, a MIDI handpan instrument, the Zen Composer, a nine pad capacitive touch cycle of fifths layout surface, and the Zen Harp, a hand held two hand touch instrument with looper. The harp is an unusual instrument, with some clever harmonic possibilities. ( Muse Electronics website )
ADDED ( Sept 5 ) :
Noise Engineering, new Eurorack Gamut Repetitor - quad random quantized generative CV sequencer. Opp Ned - four-channel arpeggiator with customizable patterns and CV control. And their first guitar pedal Dystorpia.
ADDED ( Sept 7 ) : A little of the behind the scenes on the show. There is a representative company called Voltage + Company locate in Mequon Wisconsin, not terribly far from Knobcon, that will be representing at the least Melbourne Instruments at the show. Other companies they represent at the show, that they may or may not be staffing are : Analogue Solutions, Dreadbox, JoMoX, PWM, and Studio Electronics.
ADDED ( Sept 8 ) :
The show in under a minute. 
Looks like a few more detailed videos are on the way.
Boredbrain announced availability of Optx v2 their Eurorack ADAT converter. ( video )
ADDED ( Sept 9 ) : VCV introduces VCV+ full access service. They also previewed three new modules for VCV Rack :
- Synthesis Technology E352 & E370
- Grayscale Nexus
- Klavis
Michigan Synth Works – MSW-830 It’s not not quite ready to ship, but the all fader, 3 oscillator monosynth, a follow on to their 810, was playable at Knobcon.
Hite Studios – Custom made artistic stands :
Check out this amazing, freaky stand for Syntakt, and Digitakt. Might be available in a very limited run.
Also a freaky Lovecraftian Eurorack stand.
Erogenous Tones is working on a complete redo of their video synth Structure, with much more processing power and higher res. It should be out next year.
Also at the show was Entropy & Sons with a competing video synth – i posted a video on them over in this post.