Well, I wouldn't categorized it as "upgrade" but it was changed. I'm only going off memory, but JB had live wagering on the left side menu (full site) and when you click on it you'd see the live games. Scroll down and you'll see the scheduled games for the rest of the day. It was separated from the main menu. You also got the 'current" score for each game. It was great, too, for short hockey games as it was as close as 'real time" as most other sites had, if not better.
JB then integrated the live wagering into their main menu. They are now using a green "wifi signal sign" to signify that the game has live wagering option. Just now noticed that they placed the current live wagering in the center, but there is no more "current" score of the live wagering games. Nor do they show you the schedule for the games later that day that will be available for live wagering, at least I couldn't find. Whether you think it's an improvement or not, I'm sure they think it's an "upgrade" on their live wagering.
yeah JustBet's live betting is pretty lame. They will leave a bad line for the player up for a few seconds after a score. Heritage updates scores in real time and is what I am using these days.
Used to be my favor book by far especially betting live soccer. Like others said you could watch games live and they would payout the second an over hit. Now they basically have jack shit.