Next B&R Announcement: July 8, 2019
Brief mention of London Mulligan:
Other competitive formats are generally looking healthy at this time, and we've determined no need for changes. We were happy with the outcome of the Modern portion of Mythic Championship II, and will continue to research and debate whether the London mulligan is the right change for all Magic formats. If we do move forward with the London mulligan, our approach will be to observe changes in each format's metagame first, rather than making predictive or precautionary changes to the banned and restricted lists.