The Microsoft Band is dead - The Verge

Also see Microsoft pulls Band listings from its Store; admits no Band 3 this year (ZDNet)

"Microsoft gave it two tries, but the company's wrist-worn Band fitness tracker is seemingly no more. The Band 2 has been removed completely from Microsoft's online store, signaling that production has ceased. It's no longer available from Best Buy either, though Amazon is still selling through its remaining inventory. ZDNet reports that the company has no current plans to release a Band 3. The team responsible for the Band was recently dissolved, throwing doubt on Microsoft's future plans for the product."

The Microsoft Band is dead - The Verge