My Apple Watch won’t sync my music, podcasts or audiobooks. It says “waiting”.

See if this helps, Listen to music, podcasts, and audiobooks on your Apple Watch - Apple Support The Watch needs to be connected to the charger to sync.

Were you able to get your music to sync to the Watch. I tried this afternoon and was able to get an album synced to my watch. It would only work when the Watch was on the charger, and I had selected the album in Music on my iPhone. This is a series of screenshots while the music synced. You will notice at the bottom of the first one that the music will not sync until the Watch is connected to the charger and the iPhone is nearby. The last one is what it looks like at the top area when it is done syncing. You will also see that it took around 6 minutes to sync a regular size album. So keep that in mind for time. You can watch the sync process down towards the bottom where you can see the circular part next to the album name.

I'm not sure that it does it immediately. According to other information I've read, it does it when the Watch is charging. Try setting this up to sync music before you go to bed at night and charge both devices overnight. See what happens in the morning. I'm looking for the additional information I spoke of, and cannot find it that fast.

I've got the update on both my devices, but I've not tried to put any additional music on my Watch. If it was the update, this forum would be flooded with posts, and I've not seen that.

Well, hopefully when you wake up in the morning your music will be there and all will be good. I'll put some additional music on my Watch tonight and see what happens. I'll check in the morning.