Yeah, shes been buffed for like 3 patches in a row. She is really strong, she wasn't that weak when they started to buff her but they really wanted to see her in competitive play leaving her in a rather overtuned state for soloQ
thing is she's probably REALLY bad in competitive
her kit punishes poor positioning pretty damn hard, but that's it. Her only CC is a slow, and coordination can shut her down really hard. She's immobile, easy to gank, and useless when behind. Hard cc stops her from being able to use her ult, and there are so many counters to her tentacle zone (bard ult, taric ult, kayle ult, everything about amumu)
She's strong in soloq because she punishes bad players for being bad and not dodging skillshots or understanding her kit. In the LCS, players will know her kit and will try to avoid fighting in ult and probably wont get hit by nearly so many Q and E in lane because they understand positioning
in soloq she's strong, but competitive probably not, just because of the nature of her kit.
She's probably like singed in that regard. He punishes people for chasing him, but he will likely never be played in the LCS until his kit either is reworked or the meta changes completely to the point where he's so favored he can't NOT be played.