Update: A source, "close to the matter," has told Joystiq that G4TV.com's editorial gaming staff is being laid off. This has not been confirmed by G4 as of yet, but apparently the website will be reduced to a very small staff following the Thanksgiving holidays.

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The two television shows that define G4 TV's nerd-culture appeal, Attack of the Show and X-Play, have both been canceled.

The news of the shows cancellations comes from a post on G4's Facebook page. Both shows will continue to air new episodes until the end of the year, but after that, it's all Cops re-runs, I assume.

Here's what G4 has to say about the two shows:

"Both long-running shows helped define, as well as expand, the pop culture and gaming TV experience for a generation. We hope you've had as much fun watching them as we have had making them, and sincerely hope you join us in bidding a fond farewell to Attack of the Show and X-Play's as we look back over the next two months and head towards each series' finale."

What do you think this means for the future of the network?

Thanks to Ben Buchnat for the news tip!