On a regional Nvidia facebook page Nvidia is teasing that something is to be announced or released April the 29th, which would be on a Saturday.

The facebook post (Nvidia Italy) also demos a video of polygons in the form of a planet in space or something like that. It is unusual to see hardware released in that timeframe, polygons over a planet. It might be something game stream on a more global scale? Well, there's nothing like a good viral I guess. 

Update:

We just got word in, this teaser is not about a product announcement but it merely anteaser for a Southern Europe event slash gathering. And judging from the naming, I'd say chances are fairly high that it is in collaboration with ASUS.
 

Below the video that went viral.