LOS ANGELES (thefutoncritic.com) -- "FlashForward," "Mercy" and "The Wanda Sykes Show" are all heading to the chopping block.

While ABC, NBC and FOX won't comment on cancellations until their upfront presentations next week, various studio sources indicate they won't be back for the 2010-11 season.

Also getting the hook at ABC are "Better Off Ted," "The Deep End," "The Forgotten," "Happy Town," "Romantically Challenged" and "Scrubs" - none of which were expected to return.

The same goes for FOX's "Brothers" and "Sons of Tucson," both of which were still technically alive going into this week.

And finally, the Peacock's "Trauma" is likewise out after one season with "Heroes" the sole remaining question mark.

[UPDATED: 2:26 PM - NBC has ultimately passed on a fifth season of "Heroes."]

As previously announced, FOX's "Tucson" and ABC's "Town" return with their remaining episodes next month. The Alphabet's "Ted," "End," "Forgotten," "Challenged" and the long-dead "Eastwick" and "Hank" also have unaired installments on the shelf.