Twitter. Folllow your top 10 or so ML/AI news summarizers. There is enough new information every day to keep you busy reading new papers, APIs, technologies.
Honestly the "This happened in the last week" is more information than anybody can fully wrap their heads around, so you just have to surf the headlines and dig into the few things that interest you.
The great thing about the AI world - is everything diffuses out quickly on the "For You" timeline - and then you can add people that you are interested in (which reinforces your interest in AI).
Some bootstrapping accounts might be @rosstaylor90, @rasbt, @karpathy, @ID_AA_Carmack, @DrJimFan, @YiTayML, @JeffDean, @dustinvtran, @tunguz, @fchollet, @ylecun, @miramurati, @nonmayorpete, @pmarca, @sama.
These are definitely not an authoritative list - just some of the AI names I follow - but, honestly - if any relevant news breaks - your timeline picks it up within minutes - so you just need a good random sample. Your interests will diverge and you'll pick up your own follows pretty quickly.