As a warm-up to Superbooth there is SynthFest France which runs April 1-3 — this coming weekend.
A short list of some exhibitors there :
Akai
Aodyo
Arturia
Embodme
Expressive-E
Haken Audio
Kodamo
Korg
La Voix Du Luthier
Modor
Novation
There are many others.
There is at least one new product to be shown, the Infini from Kodamo.
ADDED : There is another new hardware product to be unveiled at the show. Pylobolus – The Cloud Synthesizer. Details are still somewhat vague, but it appears to be a multi-timbral polyphonic, virtual analog synth, with likely very simple control surface as it’s made to be configured to use with a MIDI controller. You configure it to your preference using a web browser interface, and it appears you set up multiple configurations that you switch between. Details still to follow. This likely deserves its own thread.
Oh and Loumavox will be at the show. Thread link.