It is now stated, that patch 7.1.5 will be released next week, 10th of January in US and 11th of January in EU.
Blizzard also made a video regarding the things that will come in this patch. The link is: https://www.facebook.com/WorldofWarcraft.eu/?fref=ts.
Below is the video I made some days ago.
I have also added links to all the guides I made that covers each feature that comes in 7.1.5 (see below).
1) Bound on account Artifact Research items
2) Brawler´s Guild
3) New Timewalking: Mist of Pandaria
4) New Enchanting Recipes
5) Micro Holidays
- Full Guide - Essences in 8.3
- Black Warden Rhothkozz Location (Assault)
- Full Guide - Patch 8.3
- Patch 8.3 - Visions of N'Zoth
- How to unlock Magni Questline 8.2.5
- GUIDE: Patch 8.2.5
- Guide: Stormsong Valley and the Bee Hive
- How to get the Bee Mount
- Best way to farm Artifact Power in 8.2
- Quest Guide - Other interests Dense rock