All units of the same type (i.e. all Starlights if you click on Starlight) will be automatically set-targeted when they come into range of the ordered units. Clear target/other set target commands will cancel this behavior.
Usage: Alt + set target + click on a unit
These are around for some time but I don't think they were ever announced in any way
This widget lets you set certain quotas for each unit type in the factory build menu, which are unit minimums. This means that the factory will queue new units of this type until the quota is fulfilled. These quotas are per-factory. The way you can set the quotas is by toggling a toggle, that tells the build menu to set quotas instead of setting the queue. The toggle will reset to setting the queue every time the selection is changed.
Priority is handled like this, from the highest to the lowest priority:
The toggle is bound to Alt+G
Stop production will also cancel quotas.
Adds Share Unit command to all units which shares selected units to target player. You can find this action on unit's action bar on the bottom of the screen.
You can bind it to the key (it's not bound by default) in your uikeys.txt. Action is called quicksharetotarget