Oh man

Hyper skills are at the END of tempest. Tempest will BEGIN in december.

I predict the following patch cycle -

Oct 24 - Masquerade
Nov 14 - Resistance Revamp/Chaos PB (indicated by the events that all end on Nov 13)

Tempest Cycle
Dec 12 - Prelude
Dec 19 - Luminous
Jan 8 - Kaiser with Nova/Pantheon
Jan 22- Angelic Burster
Feb 5 - Magnus
Feb 12 - Hyper Skills

Reasoning - Most the intervals I used are the same intervals used in KMS. I would suspect there may be some combining of updates in GMS, though. For instance, Magnus was a separate small update in KMS. I see it being combined with either AB or Hyper skills. We may also get the Nova/Pantheon update in combination with Kaiser instead of separate. They want to start Tempest in December, so I see the Prelude early on with the first major part of Tempest (the Luminous update) happening a week before Christmas. They will have time to iron out any major bugs before the holidays. That way they can basically take off for the week between Xmas and New year's and then have another week to prepare for the Kaiser release. I don't think they will pull a Chaos on us and release it all at once, but they may pull a Legends on us and give us one big patch with all the data and then unlock stuff on specific dates. After all, we already have the start of the Luminous data and that class is easily 3 updates away.

EDIT - Timeline adjusted to reflect actual KMS intervals. The 6 parts of Tempest were released on the following dates -
Prelude Jul 4,
Luminous Jul 12,
Kaiser/Nova Jul 26,
angelic Burster Aug 9,
Magnus Aug 15,
Hyper Skills I Aug 23

I think your timeline is just about 1 week ahead. They usually start at the first week, but I do agree with that timing. I like it better the way you said it, because I'm pretty sure that's after midterms and during Christmas Break for me Also kinda ironic since I feel excited about Luminous the same way I felt excited about Mercedes and they could possibly come out at the same date.