Public-only repository plans are still free.
For private use, you no longer pay based on how many private repositories you need — you can use as many as you want for the lowest previous plan’s price ($7/month), and business users pay more for other abilities that individuals aren’t likely to need.
Some businesses will presumably need to pay more now, but it’s perfect for me, an individual with a bunch of private repositories, some public ones, and some with contributors (both public and private). I’m now saving $5/month with no more repository limit.
Credit to GitHub for the smoothest transition I’ve ever seen, too: I went in to enroll myself on the new plan, and not only had they already updated me to it, but I’d also been credited for the price difference from my last annual prepayment.