As you can see here. Github are as of today offering unlimited private repos to all paid plans. This is a switch to a more friendly pricing model basing the price on the users involved rather than the repos in use. It’s a move I think will go down well with most users. But there are always edge cases (massive team working on 1 repo etc), let me know if this is good or bad for your team. Personally it works great for me, and I suspect with teams I work closely with.
The notice quotes user feedback which is great to see as it’s always good to know such a big service is listening to its users (it can be said they have neglected the “free” users on a few points recently). But I suspect it’s also partly down to increasing competition from AWS, Bitbucket, and others alike.