Supes I'd actually expect Q2 2018, since it's going to likely be the exact same body as BvS with just a brand new sculpt and a few minor tweaks to otherwise the same suit as BvS. BvS Supes as an entirely different figure from MoS, went up for PO in December of 2015 and arrived in Q2 2016.
Maaaaybe even Q2 for WW (more likely not though) as I think it will essentially be the same as the BvS version, just a brand new sculpt as well and perhaps some minor tweaks to the suit.
The rest I'd say Q3 2018 at the earliest.
Presumably the JL WW wouldn't be released before all the solo WW figures have been pushed out first? Seeing the way they are milking SS for multiple Harley Quinn figures I could easily see HT doing two more WW solo figures. Regular armour with cloak and a Diana Prince version.
Supes and Bats are just new versions of what we have. Ideally I'd like Aquaman, Cyborg and Flash released before them but you're right they'll probably be last and Q3 or Q4 next year. At least it gives us time to save.