MIUI 8 is ready for BETA testing. This means you will be able to test Xiaomi's build of Marshmallow on your Xiaomi device. Being that this is in Beta their are likely a few bugs. So far devices that will be able to run this Rom include the Mi 2, Mi 2s, Mi 3, Mi 4, Mi 5, Mi Note, and Mi Max. The Dev Rom should be ready for release by June 17.
Changes to MIUI 8 include new animations, new font, new colors, new screenshot featrure, additional editing features in the gallery, built in QR code and business card scanner, and an all new power saving mode. You can actually flash this Rom now. Just head to the link below for instructions.
via Xiaomi