For presenting the most current announcements on Sunday morning, leaders could import the Powerpoint that is currently being used into Google Drive to allow church leaders to add announcements on slides. The presentation could be presented directly in Google on Sunday mornings. By allowing people to add slides, leaders can eliminate Flash announcements, instead requiring that leaders who want something announced to have previously added a slide in the Google form or the presentation.
This could be updated minutes before the service starts because the presentation is a constantly changing slide show. Leaders can edit using the Google Drive app or by bookmarking the collaborative presentation on their Android device or iOS product.