Quick update
All apps working fine. Just had to download them and set them up all over again. I love Telegram because the message history is stored in the cloud and its always there after a hard reset.
Didn't notice anything different since this version is basically a tweak on the APIs. To date, my Lumia 1020 has been getting great battery life since WP8.1 RTM update 1. I never block any apps in the background and just use it with WiFi and location on all the time and still getting through my almost 15 hour day. Idle drain seems to be constantly on 1% an hour. Which is great for me!
But we'll see how battery life goes over the weekend.