Google chairman Eric Schmidt on Tuesday teased Android fans by saying that Motorola is working on a “phenomenal” set of new devices that he’s describing as “phones-plus,” implying that they have some special new features added to them that current smartphones don’t offer. Schmidt, who made his remarks about future Motorola projects at AllThingsD’s D: Dive Into Mobile conference, declined to offer any further details about what “phones-plus” would entail, but it’s a good bet that they’ll be more than just high-end smartphones with cutting-edge specs.

We’ve been hearing a lot of rumors about Google and Motorola building a new device currently called the “X Phone” that may include intelligent new software features or even customizable hardware options, so all eyes will be on the Google I/O conference this year when the new X Phone may be unveiled.

Schmidt also noted that daily Android activations have passed the 1.5 million device milestone, and total cumulative Android activations will top 1 billion this year.