They're now accepting entries for 2015 tickets and have recently expanded the lottery to include tournament day passes too.
Here's the link for anyone who'd like to throw their name in. https://tickets.masters.com/app/welcome
Once you establish an account, they'll email you a reminder every year. Someone from my little group has been selected for practice round tickets 3 times over the last 10 years or so. Not great odds, but not all that bad either.
Good luck all.....and remember, if you're selected, and can't use the tickets, where you got this info.