One task usually indeed means a section of work. Like this time for example drawing/redrawing the whole car dealership was one task (just as were other locations), while creating poses, etc. for sections of the story or scenes are others. In the end the whole tracker isn't very precise, especially given that we never know how far the work on each task has progressed and how big it actually is in the first place.
Edit: As far as I'm aware right now, the scenes are done and two still are being animated by AEHentai. Oddly enough writing actually seems to be a bit of a bottleneck this time and DC still doesn't seem to have gotten the last detailed assets he needs to create from Sploosh (stuff like poses for characters in certain situations, them holding items, etc.) - so those seem to be last things left.
Hearing that, I'd guess that we'll get quite a bit more story this time compared to other updates, but maybe that's just me wishing things.
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ZaraMode:
There's never a set date, so all that can be done is to look at the trackers and to listen to DC's streams occasionally. I'd personally say we should get it in about two to three weeks, given what he said on stream but it may just as well be four.