Also in that contract it stated that Destiny was to be Xbox only the first game, so parts of it have changed since the suit. Don't take it for granted until it's officially announced.
That being said it most likely will be, if for nothing more than to make up for those that will not be purchasing the sequel.
It says, verbatim:
"The parties also currently contemplate the development as commercial release of destiny game #1 for the playstation 3 computer entertainment in the fall of 2014, subject to the parties hereto conducting a joint technical feasibility analysis that reasonably establishes to the parties' mutual satisfaction that destiny game #1 is able to be developed for the PS3 at quality and feature parity to the Xbox 360 version of destiny #1."
TL;DR
They had concerns whether the PS3 could play the game they were developing and wanted to make sure before moving forward with destiny for PS3.