On January 24, 2006, CBS Corporation (which split from Viacom in December 2005) and Time Warner's Warner Bros. Entertainment (the division that operated The WB) announced that they would dissolve UPN and The WB and merge both networks' stronger programming onto a newly created network, The CW. Concurrent with the announcement, it signed a ten-year affiliation agreement with 16 of Tribune's 19 WB-affiliated stations. However, in the case of Philadelphia, The CW's affiliation went to the city's UPN station, CBS-owned WPSG (which was part of an affiliation deal with 11 of CBS' UPN stations). It would not have been an upset had WPHL been chosen as the area's CW affiliate, however. The network's officials were on record as preferring The WB and UPN's "strongest" stations for their new network, and Philadelphia was one of the few markets where the affiliates of both networks were both relatively strong.