The Guild Wars 2 team is keen to get players caught up with the current state of the MMORPG, so the team has announced a special Expansion Boost event coming in September.
Detailed on the official website, Guild Wars 2 players who are lagging behind the current Living World seasons can play catch-up, as the event will provide double mastery EXP during the event. Players will gain the mastery EXP in Guild Wars 2: Heart of Thorns, Living World Seasons 3 and 4 maps as well as Guild Wars 2: Path of Fire. The mastery EXP is crucial to players lagging behind in the Living World seasons as it's necessary to have a certain amount of mastery tracks to complete the Living World maps.
The event will start on September 3rd and run through September 17th. You can check out the full details on the Guild Wars 2 website.