Hi Mary Lou,
Great question and at one time I was also directing guests to the park hours page for refurbishment information. You are right, it seems to no longer be listed in that spot, however you'll find the information on each attraction's page, for example,
Splash Mountain.
What I suggest is to search an independent site like allears.net for a list of current, upcoming or rumored refurbishments. You can then confirm the information by searching the attraction on the official Disneyworld.com site. Because dates are always subject to change, typically Disney will only provide today's closed refurbishments.
I can assure you there is plenty of magic at Walt Disney World despite a few closures here and there, so if you notice an attraction is down during your trip, do not fret! I know for certain we've never been able to see and do it all in one vacation... or
ever for that matter!
I wish you a magical vacation, Mary Lou, and please visit us again with further questions. We're delighted to help!
Sherri