For those that will find this of interest:
Here's a list of historical release dates for Stay Play Dine and room only discounts typically covering Jan/Feb dates:
2019 Travel - released 9/26/18 VISA, released 9/26/18 PUBLIC
*(no early Visa release although there were add’l discounts for Visa cardholders)
2018 Travel - released 10/3/17 VISA, released 10/3/17 PUBLIC
*(no early Visa release although there were add'l discounts for Visa cardholders)
2017 Travel - released 9/28/16 VISA, released 9/30/16 PUBLIC
2016 Travel - released 9/24/15 VISA, released 9/28/15 PUBLIC
2015 Travel - released 10/6/14 VISA, released 10/9/14 PUBLIC
2014 Travel - released 10/3/13 VISA, released 10/7/13 PUBLIC
2013 Travel - released 10/4/12 VISA, released 10/10/12 PUBLIC
And just to add info here for those that stumble across this post,
2011 & 2012 were the last 2 years where Free Dining was offered during Jan/Feb/Mar. For 2013 and onward it's been Stay, Play & Dine. There's been rumors EVERY year since then that free dining is coming, and then it ends up being StayPlayDine so if you hear that rumor again, take it with a grain of salt.
Also if you want to know more about how the SPD deal has worked in the past and how to calculate what your savings might be check this out: https://www.disboards.com/threads/stay-play-dine-2019-calculation-thread.3708403/ (there are also threads for '15, '16, ‘17 and '18 linked in the first comment on the 2018 thread)