Stretch Assignment
Work above your current level, offered as growth. Half the time it is; the other half it's a vacant role's duties at your current salary. The difference is whether a promotion follows.
Heard in the wild
“Leading the site consolidation is a stretch assignment — allegedly with a title behind it.”
Tone check: Euphemism
Ask what happens after: timeline, criteria, title. 'We'll see' means you're free labor with a compliment.