So before I agreed to update I read what it offered and it specifically stated message preview, so I didn't think it would affect this.
I can no longer see text messages until I click into the actual app?!?! This is ridiculous! Why can't I preview it when it comes over, or when I click the wake up button and pull down the top bar?
This happened to me once I updated too, but you can change it!
Settings > Lock Screen > Notifications > View Style > Detailed or Brief, whichever you prefer.