Do you remember Spot? Well, that was Microsoft's very early smartwatch effort, lost in the mists of bygone technology. Finally, a long time coming, a more modern effort from the company is apparently on its way-- and coming soon. According to Forbes' anonymous sources, Microsoft's next smartwatch will be able to passively track your heart-rate (meaning less stress on the battery) and work across several mobile platforms. Both points make a lot of sense, but the latter could be especially important if Microsoft wants a hit: Windows Phone is still a very distant third to both Android devices and the iPhone. The rumored product could also explain why the heck Microsoft developed a smartwatch keyboard in the first place. We'll let you know more when we hear it.