The proceedings can be downloaded from the POPL webpage.

I find this extremely exciting (not only because I didn't get funds to attend POPL this year). To my knowledge, this is the first time that this is done in POPL/ICFP/PLDI; electronic proceedings were previously only delivered to attendees, with an explicit request not to share them.

I am not sure what is the reasoning that make which people decide to do it this year, or not to do it before. I hope that the proceedings will remain available after the conference (next week), and that this idea will be adopted for the years to come.