https://www.nasa.gov/news-release/nasa-exploring-alternative... ("NASA Exploring Alternative Mars Sample Return Methods")
The latest Mars rover has an (IMHO, purely performative) function for collecting samples that, in theory, could be retrieved for Earth return by a separate lander in the future—one that hasn't been budgeted or designed yet.
https://en.wikipedia.org/wiki/Perseverance_(rover)#Samples_c...