Toonami Infolink - Simensky Leaves Cartoon Network.

Quoted from Animation Blast

No confirmation yet on whether Genndy Tartakovsky has jumped ship from Cartoon Network to Lucasfilm, but another major departure from Cartoon Network which can be confirmed is that of Linda Simensky. She had been with the cable outlet since 1995 and was CN's senior vice-president of original animation when she left her post in early October. AWN.com originally broke the news of her departure and has been following the story since then.

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Quote continued from Animation Blast

As of this past Monday, Simensky officially assumed the position of senior director of children's programming at PBS where she will manage the PBS Kids programming block. Linda has long been one of animation's most artist-friendly executives and her departure from Cartoon Network is significant news. The network has been following an ominous path during the past year, evidenced by various executive shake-ups and programming changes, and their loss of Simensky seems to be another indication of which direction the network is headed towards.