Xiaomi Mi4S will feature a 5-inch FHD display and 13-megapixel main camera with OIS for the main camera. It looks as though the front camera of the Xiaomi Mi4S is a 4MP ultra pixel model and that the processor is a Qualcomm MSM8994 or more commonly known Snapdragon 810.
In July 2015 there will be 2 Redmi models in the form of the Xiaomi Redmi Note 2 and Xiaomi Redmi Note 2 Pro. The Redmi Note 2 will feature a 5.5-inch HD display, 13-megapixel main camera, 5-megapixel front and MSM8919 Snapdragon 410 chipset. The Xiaomi Redmi Note 2 Pro will feature a 5.5-inch display with a resolution to 1920 x 1080 and a more powerful Snapdragon 615 octa core chipset.
In November it is rumored the Xiaomi Mi5 will launch. Specifications for the Xiaomi Mi5 features a 5.2-inch 2K display, 20-megapixel main camera, 2-megapixel front and MSM8996 chipset rumored to be the Snapdragon 820.
These are the specs and model number through leaked image