Athearn announced a new run of SD60Ms just this past April, for December delivery. In this run they're doing BNSF (Heritage I & II), UP and NS versions. Not re-doing the green/white BNs in this run, but my guess is they'll probably do another run in the future... They've released/announced a fair bit of green/white BN lately (SDP45, GP38-2, F45, GP50, GP9, & GP15-1), so they must feel demand exists. I'm sure it's just a matter of time before they do another run of SD60Ms as well...