Will the program book be available electronically before Gen Con this year?
If I remember correctly, it's usually the week of. So I would say no later than Monday.
Yep. Last year the PDF was out the Monday before Gen Con.
Alec Usticke, Fans of Gen Con Facebook Group
As I recall the actual physical guides tend to be put out Tuesday evening or Wednesday morning.
[Edit] - Derp...I need better reading comprehension. Leaving my post here as a reminder to other people to read people's questions more carefully before posting.
I'm sure the OP knows but the PDF went live yesterday