Former Nokia CEO Stephen Elop came on stage at Microsoft’s Build developer conference today with orange sneakers and three new Windows Phone 8.1 devices. And on top of that, he announced that all existing Windows 8 Phone devices would be upgraded to Windows Phone 8.1 later this year. “All Windows 8 Phone devices get 8.1 this summer,” Elop said.

Elop first showed off the new global “flagship” device for Windows Phone 8.1, the Lumia 930. With a 5-inch screen, a 20-megapixel camera, and a 2.2 GHz Qualcomm Snapdragon 800 processor, the Lumia 950 is essentially the same as the Lumia Icon—except for the fact that it will ship with a back plate that comes in a variety of bright colors, including green and orange. The Lumia 930 also includes four built-in high-performance microphones, allowing for the capture of integrated Dolby Surround Sound or directional stereo audio as part of HD video capture. The phone will start at $599 and be available through more than 100 telecom operators starting in June, though sadly not in the US. Since it’s the same hardware that Verizon currently sells as the Icon, Verizon will remain an exclusive.

Elop also introduced the 630 and 635, two new entry-level phones. The 630 comes in two versions for GSM 3G networks and is primarily targeted at the international market—a $159 single-SIM phone and a $169 dual-SIM variant which will allow users to use two numbers on the same phone. The Lumia 635 will be a 4G LTE phone that will be sold worldwide. It arrives in the US in July and is priced at $189 before carrier subsidies and taxes.

The dual-SIM 630 phone can also keep call logs and contacts separated between numbers, automatically dialing personal or business contacts from the preferred network for each. “In India, China, and Brazil, dual SIM capability is critical,” Elop said.

Both the 630 and 635 introduce a new technology called “SensorCore," a low-power motion and location sensing technology that allows the device to record movement even when the phone is in standby. Elop showed how the capability could be used as the equivalent of a fitness band to push data to a Bing fitness application, measuring steps and distance for workouts. A programming interface for SensorCore is being made available to developers.

Update 2:33p Central (4/2/2014): This article originally identified Elop as the CEO of Nokia. However, Elop stepped down from the position when the sale of Nokia was announced. Ars regrets the error and has updated the text accordingly.