Anyone know if the GRE is still required for someone who's been enrolled in a traditional Master's in CS program before but with a GRE exemption?

GA Tech's CS program did not require the GRE, partly for the reason you state. There is still the usual admissions process with old GPAs and reference letters. Instead of GRE scores and very tough standards, students are conditionally accepted until passing 2 foundational courses within the first year. Hopefully the new program does the same, but it doesn't look like they've officially stated that yet.

Their FAQ states that the GRE is not required at all.