The Lumia 635 seems to share most of its (yet unconfirmed) features with the Lumia 630, which doesn't have LTE but offers dual SIM capabilities...
via http://www.phonearena.com/news/Nokia-Lumia-635-Moneypenny-screenshot-reveals-4G-connectivity_id50803?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+phonearena%2FySoL+(Phone+Arena+-+Latest+News)
