In addition to the weekly 10 champion rotation that players can try out without buying them, Riot has added 10 additional support champions to the free rotation. The supports will be available to play for free for around one month before disappearing.
The extra supports included are:
The company did this to combat the ridiculous ranked queue problems players are facing - typically if you select your desired role and the “fill” option, you will be shoved in as a support, since not enough players opt to play the position.
It’s unknown if this will fix the problem, since most experienced players don’t play support because they don’t like playing it, not because they don’t know how to or because they don’t own enough support champions.
Regardless, it doesn’t hurt to make support champions free to play for a little while. Expensive champions like Thresh, Nami and Braum are out of reach for a lot of players starting out, and having them readily available may end up teaching more people how to play support from the early stages!