Several film sites are reporting that there are two rumored titles being considered for Star Wars: Episode VIII. The first one is "Star Wars: Tale of the Jedi Temple", which could be true if you believe this photo showing a proposed promotional logo.
The next rumored title "Star Wars: The Order of the Darkside" is from the set hands over in Debrovnik, Croatia where filming has begun just recently at night.
Now take it how you will, but I'd at least like to believe the announcement news for May the 4th. That'd be a great way to do it!