Yes, there are a number of doctrines the JWs have in common with the SDA. Soul sleeping is the most prominant one, not to mention belief that the Earth is in the final days. The SDA faith has, as a basis of belief, the revelations given to Ellen G. White.
Visiting the SDA website is a somewhat soupy experience. You get a lot of stuff like this: "Because you and God are friends, you will spend time together as friends do. Each morning you'll share a hello and a hug and discuss how you can face the day's events together. Throughout the day you'll talk with Him about how you feel. You'll laugh with Him at funny things and ache with Him over sadness and hurts. It's pleasant being God's friend, able to snuggle comfortably into the safety of your relationship. You can always trust Him to treat you well, because He loves you."
This mystical sap really means little in the way of understanding. And Ellen White's role is largely missing except for one paragraph under the church's beliefs in prophecy: "The gift of prophecy, like the other spiritual gifts, is to bring about unity, equip God's people for the work of ministry, build up the body of Christ, protect it from being deceived by false doctrine, and foster individual and collective spiritual growth (Ephesians 4:11-15). We recognize in Ellen G. White the gift of prophecy, and affirm that as this gift is valued and its instruction heeded, the Church prospers." The WTS, on the other hand, rejects prophecy (except to strongly imply that the slave is chosen by it). Still, the WTS never actually says it.
Ellen White's gift of prophecy is discussed here in relation to the War of 1861. She claimed in 1863 that the North was being punished for its toleration of slavery and that ultimately the South would be punished. Additionally, she apparently predicted that the U.K. would take advantage of the war and declare war on the U.S. She correctly declared the war was to preserve the Union rather than abolish slavery, but everyone knew that at the time, and Lincoln freely admitted it.