Fearless Defenders #12
to mark the last issue of the title.
Notably missing from Marvel's January Solicitations was Cullen Bunn and Will Sliney's "Fearless Defenders" -- and Bunn has confirmed via tumblr that December's "Fearless Defenders" #12 will be the final issue of the series.
"The book will end with issue 12," Bunn said in response to a fan question. "We’ll try to wrap up as many story elements as we can!"
As a reader of this book it's a bit of sad news but not unexpected either. Marvel propped it up for two issues more than Journey into Mystery w/Sif and Red She-Hulk.
When Marvel announced Elektra, She-Hulk(Walters) and Black Widow I seriously wondered what that meant for this already struggling book. Not really surprised unfortunately. So now the watch is on for which of the above 3 are going to be gone by issue #10 as Marvel fandom is horrid at supporting female led books...even Captain Marvel but editorial is determined to push her till she works so she'll get past issue #10 which is why I don't count her.