I don't get your point? The champion's primary role is shown via icon next to their names, as big as it gets, but seems like you missed it. According to new client it looks like champons don't have secondary role, which would make sense as they should be having multiple possible roles they can fit into to various extends based on player's expreimentations as Riot doesn't want to enforce meta. There are champions nearing half-hybridism like Taric, so in case you really need it, they might add label with secondary roles into that.
But your screen shows mostly new or well-updated data that have nothing to do with champion's role the same way Attributes label did, so the problem is you are looking at the wrong section of the screen, that's not the client's problem someone misses giant icon.
You are talking about Attributes label only, so my point still stands, look better and you'll find icon clearly showing the info you are looking for, but since you missed that I will assume you are also talking about the stats line. What's not to be understood from that? The dark lines are FALSE, the amount of light lines shows rank 1, 2 or 3 representing Mediocre/Abesnt, Decent or Great focus on certain aspect being:
Swords - Offense, doing damage
Shield - Defense, being able to sustain over damage
Swirl - CC, how much they can invalidate enemy's ability to react
Boot - Mobility, their basic speed of movement or mobility abilities
Cup - Utility, healing, shielding, ability to hold through obstacles.