Can someone poke some indie-dev to spill guts when Steam Sales start?

Seeing that Steam lately puts tons of indies/smaller-games on sales (even as midweek or weekend deals) that probably means Summer Sale is closer than far away (guess big publishers decided to wait until then), but maybe someone knows some developer to "ask, ask, wink, wink" when they are planning some big sale of their games?
So we could have some trustworthy date, like last year Magic Crystal dev said when sales would happen.