WWE officials made the decision to bring back the Elimination Chamber event for a WWE Network exclusive event within the last few days. Talents backstage at last night’s RAW were surprised to hear the announcement.
One of the reasons WWE did away with the Chamber was due to the lack of arenas that would allow the set up of the heavy Chamber when renovations to older arenas made it impossible for them to handle the structure. The American Bank Center in Corpus Christi, Texas has not had renovations done that would prevent the Chamber from being assembled so it will be able to handle the structure.
Source: PWInsider.com