The battle for the backup goaltender job in St. Louis is over for now. Ben Bishop has been assigned to Peoria and Brian Elliott will back up Jaroslav Halak for the Blues. (per Jeremy Rutherford's twitter account)
As previously discussed on this site, while it's surely a disappointment for Bishop to be re-assigned, this is probably best for his development. If he can excel in the AHL he may be pushing Halak for the starting job within a couple seasons.
Elliott, meanwhile, has an excellent opportunity to extend his NHL career by proving he can win games and effectively backstop in this league. He is a free agent at the end of this season.