Probably an old one. DLW stopped production of mainline ALCOs a few years ago. Only DMW and Parel workshops continued producing ALCO shunters. So, this is very likely an older locomotive.
It is a new project. Dual-mode locomotives were in the works for a very long time, but this project popped up rather suddenly. I haven't seen discussions about this one in any other railfan groups as well. This has been a major surprise.