Engineer logic for picking what targets to assist first. Mostly this relates to repair order, but also somewhat to build-assistance. Let us know how it feels now, and what else would improve the default logic.
Rebuilder logic has also been redone. Prioritization wasn't really a problem here, but a number of changes over the years had resulted in a fairly pants-on-head behavior for these. Basically each rebuilder could rebuild something once every ten seconds, but most players couldn't tell because a pile of 20 would all try to rebuild the same one. One rebuilder would succeed, the rest would wait a second or two until they could retarget. And then retarget all onto the same one. And one would succeed... and so on. The recharge time paled in comparison to the "waiting in line" time. Also, FRD rebuilders tended to "yoyo" back and forth between targets and their FRD point. Now they're much better at spreading out across the available target remains, and will yoyo much less frequently. Partly this is because their recharge time is now 1 second. That may be more of a buff than intended, please let us know if it makes things too easy (probably not) or what else would improve their logic.
Fabricators and Advanced Factories will now avoid seeding near wormholes, much like human home command stations. The longstanding bug of always-2-spider-V-fabs has also been fixed, and in general fabs are more likely to be Core fabs, since there are more different types of those to go around variety-wise.
Another one that's been very popular for a long time: teleporting units now use their normal engines (which have been upgraded somewhat, for the ones that used to be glacially slow) when given a group-move order. This is one I didn't even think could be done and thus didn't feel a lot of motivation to deal with, but it showing up towards the top of both the mantis votes and the 6.0 poll helped there ;)
Please keep the feedback coming, the official 6.0 release isn't very far away and we want it to be as solid as possible.
This is a standard update that you can download through the in-game updater itself, if you already have 4.000 or later. When you launch the game, you'll see the notice of the update having been found if you're connected to the Internet at the time. If you don't have 4.000 or later, you can download that here.