I know there's bound to be release dates shifted, but I didn't realize how many spots had already been claimed for 2016. We don't know much about X-Force and Wolverine 4, but I think X-Force could work in March and W3 in late November (both 2016). I would put W3 in December but I think Avatar 2 comes out then? I don't see how either film could fit in May, June, or July with a Marvel film already slotted in each. It's still a lifetime away though, many things can change.