According to community feedbacks, some changes took effect on vanguard stats. As you can see in the game, while its HP is increasing, the defense has been reduced.
What's more, if you fighted the melee vanguard, you will found that its high magic defense has been exchanged with melee defense. Aggro range and spawn positions have also been tweaked, with the former being reduced.
Finally, at least one Overload is guaranteed. But you should know that more changes will come regarding HUD.
There are also some improvements on Chambers of Xeric, as the following issues been fixed, you can enjoy the best game:
Rebalanced the scavenger beasts' loot table to include a more reasonable amount of cicelies and endarkened juice.
Altered the positions of crystals in one of the crab rooms, to not be as much of a hindrance on raids efficiency.
Fixed an issue where players would be hit by Vespula's melee attack if the Abyssal Portal died.
Finally, Bounty Hunter world, specifically w535 AUS, has been removed.
You can get all info of the full update of these changes and improvements for old school RuneScape at GOLDRS. Not only that, you can enjoy fast delivery and various payments for cheap OSRS Gold here.