I don't know if this will be the time for it, but there seems to be a lot of interest over at Spitfire for modular synths. Christian and Sandy are way into it, but it Eurorack synth modules pop up in a number of the videos. I wouldn't at all be surprised to see some Spitfire branded Eurorack modules in the future. Maybe even something that would combine a synth module with samples (i.e. a module capable of generating complex, sampled sound content). It might be done in a collaborative manner with another company (like the 8Dio relationship with Dave Smith). Christian seems pretty friendly with Strymon. Maybe something will develop from that.
Or... Maybe it'll be a hardware synth packed with Spitfire sounds, just like the 8Dio/Dave Smith product. I'm surprised we haven't seen more of that sort of thing.
I really do like the way Spitfire is keeping things interesting. Really bodes well for their continued survival. Resting on your laurels and doing more of the same-old, same-old is not a good thing in this biz.