all i know is Magu'shan vault will be released after a week of 5.1 means 2-oct and Raid finder which only be 1 raid temporary ( Magushan vault ) at 9-oct
September 25: MoP launches
October 3: Mogu'shan Vaults (normal) opens
October 8: Mogu'shan Vaults (LFR) opens, those who cleared normal Vaults can access heroic mode
October 31: Heart of Fear and Terrace of Endless Spring (normal) open, with Terrace only accessible by clearing Heart
November 7: Heart of Fear and Terrace of Endless Spring (LFR) open; queuing for Terrace requires clearing Heart. Those who cleared normal Heart can access heroic Heart, same for Terrace.
Btw, which video guides are the most up-to-date for the mop raids?
Check my LFR guide in sticky, click on the bosses name and they are quite up-to-date still. However, we won't know 100% until they are live. OP you have your answer already from here.