From earlier in the year, it appears Left 4 Dead 3 is in development. While I never got into the franchise as much as ZP:S or NMRiH, it is still very fun at times. Makes one wonder what is on tap next.
Some new developments on the next installment maybe seen here. It is looking like at the soonest, late next year the new release will be out. .It will be a “prequel-sequel” in that it is set in the early stages of the infection. Four new survivors are being introduced.