Found this on refundschedule.com(don't know how accurate it is so take it for what it is):
Start Date End Date Projected Direct Deposit Sent on or before* Project Paper Check Mailed Date
1/12/2015 and 1/20/2015 1/30/2015
Updated 2/2/2015
1/20/2015 and 1/30/2015 2/5/2015 2/6/2015
1/30/2015 and 2/6/2015 2/12/2015 2/13/2015
2/6/2015 and 2/13/2015 2/19/2015 2/20/2015
2/13/2015 and 2/20/2015 2/26/2015 2/27/2015
2/20/2015 and 2/27/2015 3/5/2015 3/6/2015
2/27/2015 and 3/6/2015 3/12/2015 3/13/2015
3/6/2015 and 3/13/2015 3/19/2015 3/20/2015
3/13/2015 and 3/20/2015 3/26/2015 3/27/2015
3/20/2015 and 3/27/2015 4/2/2015 4/3/2015
First two numbers are dates submitted, third date is direct deposit date and last date is when paper checks are mailed.