NVIDIA teases 'it's coming' for April 29

NVIDIA is teasing something brand new for April 29... and we have no idea what it is. All NVIDIA is saying is that "it's coming" with a date of 29th April.

What could it be? A new SHIELD? Shield VR headset? TITAN Xv (Volta GPU)? Consumer HBM2-based GeForce card (I don't think so). The GTX 1180/2080 refresh? Hmmm.