Sadly, I believe this announcement relates to the declining health of John Sr. who is no longer able to help with the garden at all anymore. John Jr. works full time and just doesn't have the time to keep up with a job and a full time daylily operation.
John Jr. had to cancel his planned speaking engagement at Lilyhemmer this past fall,and he gave his dad's declining health as the reason. I wish them the best and hope that John Jr. will be able to get back into daylilies at some future point. Look for a blurb about him in the upcoming Winter DJ, which will be released in a few days. ( on the Awards page, as his 'Spacecoast TIny Perfection' won this year's Lenington Award.)