{{ $allNews := where .Site.RegularPages "Section" "==" "news" }}
{{ $announcements := where $allNews "Params.announcement" "ne" nil }}
{{ $announcements = where $announcements "Params.announcement.date" "ne" nil}}
{{ $futureAnnouncements := slice }}
{{ range $announcements }}
    {{ if gt (time.AsTime .Params.announcement.date) now }}
        {{ $futureAnnouncements = $futureAnnouncements | append . }}
    {{ end }}
{{ end }}
{{ $announcements = sort $futureAnnouncements "Params.announcement.date" "asc" }}
{{ return $announcements }}