New patch for the 14th sounds awesome.
https://www.youtube.com/watch?v=n848sztfDXQ
Just pulling this off Reddit
Discord integration where you can send friends direct challenge via discord
Best of 3 direct challenges
Japanese and Korean language localization
Improved filtering and seeing more cards at the same time in the deck builder
Also mentioned Bo3 ranked and the Mythic invitational (which we already knew about)
At the end he also hinted at something with your "favorite roommates" (presumably Day9 and Danny Trejo), possibly an ad or event.
QUALITY-OF-LIFE IMPROVEMENTS
We're continuing to add polish and other quality-of-life improvements to all aspects of MTG Arena. With this update, notables include improvements to our timer system, a "Resolve All" option for repeating triggers on the stack, and the ability tomass-select attackers and blockers. Full patch notes will be available once the update is live next week.
The Deck Builder now supports multiple views and zooming options, an improved deck details page, changes to adding lands, and you can now sort your decks by format (Standard, Singleton, Pauper, etc.).
https://magic.wizards.com/en/articles/archive/magic-digital/mtg-arena-state-beta-february-2019-02-11