Just days after a report revealed a new Destiny expansion called The Taken King, developer Bungie has told fans to expect “surprises” at E3 next week.

As part of Bungie’s latest Weekly Update, the developer shared the image you see here of a crate it’s packing for the show; it is sure to draw some attention from the TSA.

“Okay, so, uhhhhhh, we have one item labeled CAUTION EXPLOSIVE PROJECTILE, but it’s totally harmless,” Bungie said. “And, well, if you X-Ray it, you’ll see something that looks like [redacted], but we promise it’s not that either. Can you just trust us that it’s not dangerous?”

“We know what you’re thinking: “What’s in the box?!” These and other surprises are on the way to E3,” Bungie added. “Can’t wait to show you what we’ll unpack over the course of the show.”

According to leaked marketing material, The Taken King will launch in September, priced at $40. Activision has previously referred to this add-on as the biggest Destiny expansion to date, which might explain why the price point is twice that of the previously released DLC, The Dark Below and House of Wolves.

In addition to The Taken King, E3 next week may bring news about even more Destiny expansions. Cowen & Company analyst Doug Creutz said in a note to investors today that, “We hope to hear some plans for further expansions later in 2015 and 2016.” Analysts often meet with developers and publishers behind closed doors, so it’s possible this content won’t be shown publicly.

In other recent Bungie news about unannounced stuff, the developer recently trademarked something called “Eververse.”

Destiny publisher Activision is not holding a press conference at E3, so it’s unclear where Bungie’s Destiny announcements will take place. One possibility is during Sony’s briefing, as the company has a close relationship with Bungie.

Bungie has continually tweaked and refined Destiny since its launch in September 2014. Most recently, the developer announced plans to make the game’s baddest boss a little easier to kill.