Recently, we've seen players asking for us to expand the weekly free champion rotation beyond just 10 champs. So that's exactly what we're going to do!
Since we’ve added a lot more champions over the last few years, updating our model to include 10% of all champions instead of just 10 is just fair.
From the next rotation starting on 15th August 2017 (SGT), there will be 14 champions in the free-to-play rotation going forward. Whenever we eventually release our 150th champ, we'll look into increasing the rotation to 15 free champs.
Thanks for giving us your feedback! We hope you enjoy the change!