Sonia G. announced tentative restock dates for several products, including The Sky Eye Set, which will restock at 10AM PT on Thursday, February 20th at Beautylish. The brushes from this set will be available individually in the next month or so as well.
The following brushes are expected to return around March: Worker One, Face One, Face Two, Sculpt One, Sculpt Three, Sculpt Four, Builder Pro, Blender Pro, Worker Pro, Detail Pro, Fan Pro, Cheek Pro, Inochige Pro, Face Pro, and Designer Pro. You can view photos of the brushes here.
The Sky Face Set is expected to return in late April or early May.