I think this is a little bit outdated.

I find it amusing, to say the least.

They don't. Champion Spotlight only gets updated when they received Gameplay Updates (Shen & Gangplank for examples).

Rumble's kit isn't that extensively changed besides the visual update on his Q & the charge system on his E. Others had it worse where some of the kits listed here have been changed:

The removal of E's slow removal, and the part where his E now gets cdr from his passive. The spotlight shows his E having a constant CD.

Dunno why for some reason, she's the only champion to not receive a new Champion Spotlight at all, even when her kit has more changes than GP & Shen.

No new Spotlight after the Marksman Update they received.

Same reason as above. Garen isn't listed since his playstyle is still completely the same.

Them dodge seals.