The US supreme court currently has a fixed size of 9 members, but it hasn't always been this way. It takes only an act of congress to change the size of the court. The president Franklin D. Roosevelt famously failed to increase the size of the court despite his party having a supermajority in congress.
This question resolves positively if at least five reliable media outlets report that the size of the US Supreme Court has been changed by law by January 1st 2050. Otherwise, it resolves negatively.
This question closes 1 hour before any relevant law or constitutional amendment passes, or before any other legal action happens, that would induce a positive resolution.