Recently, Kevin Kelly of Wired magazine discussed the next 1,000 years of Christianity.
There's a summary by Kent Shaffer of what he said on the neoleader blog.
To give you a taste of what he said here's his list of possible future events...some of which might be tongue-in-cheek

• At the rate that new Christian denominations are growing, there could be 260,000 denominations by 2100.
• Mormons are growing fast. What if they become the world majority?
• The Amish are also growing fast. Could the world become Neo-Amish?
• Around 2050, will be the first time in history where we have doubled the world population but are expectedly to dramatically decrease it.
• What happens when robots with artificial intelligence say, “I too am a child of God?”
• Transhumanity
• With genetic engineering, will we remain one species or many?
• Wikipedia does not work in theory but in practice. What about Wikichurch?
• Christianity becomes hip.
• Purple Christians (a mix of Democrats and Republicans)
• Islam in Europe

You can check out the original half-hour video here.