I have a Garmin Fenix 3 HR and an iPhone running Garmin Connect 4.1.3. I've created some workouts which I'm following. In Garmin Connect, if I go to Device Settings for the F3HR, there's an option for Audio Prompts.
The options there are great, but they only announce information about the last lap / segment or the activity to that point as a whole. I'd love it if they could also announce what the new lap / segment is.
If my workout has a recovery walk as the last segment, then it announces info in that and I break out in to a run as that's what usually follows a recovery walk. Only the activity is over and I had no way of knowing if I was only using the audio prompts. Just something like "This lap, run. X minutes. Pace X" or "This lap, recovery. X minutes" or "This lap, cool down. X minutes".
This would fit in quite well with the workout builder IMHO and would mean if I'm on tricky terrain as the segments change I can keep my eyes on said terrain and just use audio prompts to know what I'm doing next - or if my activity is over.