These devices, with names only a geek could love (the Roku LT, Roku 1 and Roku 2), reach stores in October. Roku also is adding the M-Go movie and television service to its entertainment offerings.

Roku is going small with its latest streaming players, unveiling a new pair of streaming sticks that are up to 35 percent smaller than its competitors, the company says.

New Roku Pro Series TVs are being distributed to consumers this spring, and Roku says the sets deliver “a powerful yet simple streaming experience with a brilliant picture, immersive audio, and ...