This has been reported by NPR, and confirmed by NBC.
It should get interesting.
I would say that if there is a policy of Republicans to follow, it is to appoint younger justices.
If you look at recent appointments, the Republican appointments were in their early 50s (43 for Thomas), and the Dems (Bryer and Ginsberg) were 56 and 60 respectively.
This was a conscious decision, in order to maximize their tenure.
I would also add, wait for Franken to be seated, in order to forestall a filibuster.