So what is the theme for the Jam? Thought that it would be revealed already. 

Same as the timer for submission now shows 1 day and 7 hours.

I wonder if any of the host are around to get some clarification. 

I e-mailed both hosts and  I got an answer from Rick Dakan.  The essence of the message is: "We haven't revealed the theme quite yet- it will be revealed around 8 pm EST. We'll add it to the Ictch.io site then". To me, it means, it will be informed in less than 3 hours...

If it happens that you did not notice it on the Overview.....

The theme with its materials can be found here

https://docs.google.com/presentation/d/170F1W57IAHT6kGlyC_EUQl0y05lAISqRILYrfLoB...

The materia is good and I like it. It inspires me a lot. I am here brainstorming and getting ideas...  Good Luck and Godspeed to all! <3