The update says all 3 conquerable stations have a new mission, each hive-specific.

Unless you have some prerequisite I don't meet for the Milanar and Siepos Optical Sensor missions, the only one available is the Prosus Mission. Of course now that I say that, I'm wondering if you made the Prosus mission a prerequisite of one of the others, and the last require you finish the second...

Nope... just checked all 3 stations. Still no Siepos nor Milanar missions available.

Ok, the Milanar and Siepos missions should be working now. Thanks for the report.