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LEGO 42703 Mermaid Roller Coaster Ride has now appeared on the official LEGO coming-soon page, which means this upcoming Friends release has moved into clear official-reveal territory on LEGO.com. The listing confirms the set number, the official product name, a total of 864 pieces, an age recommendation of 8+, a US price of $109.99 and a release window of Coming Soon on August 1, 2026. That matters because it gives builders something firmer than leaks, retailer placeholders or rumor lists: the set is now visible through LEGO’s own storefront with an official description and a proper image gallery. For anyone tracking the next wave of launches, that is enough to treat Mermaid Roller Coaster Ride as a confirmed new set and to look at what it brings to the wider 2026 lineup.
LEGO has also published the full official product page for Mermaid Roller Coaster Ride, so the basic facts are already clear. That gives us a reliable basis for coverage: rather than guessing from leaks or preliminary retailer data, we can work directly from LEGO’s own listing, its official copy and its official image gallery.

LEGO 42703 set details at a glance
- Set name: Mermaid Roller Coaster Ride
- Set number: 42703
- Theme: Friends
- Pieces: 864
- Age marking: 8+
- Price: $109.99
- Release: Coming Soon on August 1, 2026
What LEGO is showing in the official reveal
Make playtime extra thrilling with the LEGO Friends Mermaid Roller Coaster Ride (42703) building set for kids ages 8 and up.
The official description makes it fairly easy to see who this set is for and where LEGO thinks its appeal sits. Instead of relying on vague teaser language, the listing points to the actual play or display concept, which is exactly what you want from a new-set reveal. That is especially useful on the coming-soon page, where the main question is not whether a set exists, but whether the official details are strong enough to judge what kind of release LEGO is preparing.

Key features of LEGO 42703
Based on LEGO’s own listing, these are some of the most important points attached to the reveal:
- ROLLER COASTER BUILDING SET – Let the good times roll with this LEGO Friends Mermaid Roller Coaster Ride (42703), which includes 5 minidolls and lots of themed accessories
- FUNCTIONAL AMUSEMENT PARK RIDE – Kids can have lots of fun role-playinga thrilling day out, taking the minidolls for a ride on the working mermaid-inspired roller coaster toy
- 5 CHARACTERS – Change up the Autumn minidoll’s face to reflect her excitement as she explores the park with Leo and Liann; discover 2 shimmering mermaid toys for endless fun
- CREATIVE ACCESSORIES – Inspire storytelling and imaginative play with themed accessories, including bubble tea, a photo strip, sea animals, a LEGO piece narwhal toy plushie and more
- GIFT IDEA – This mermaid toy for girls and boys makes a great holiday or birthday gift for kids ages 8 years old and up who love pretend play and roller coasters
- MAKE MORE FRIENDS – Discover more fun with other sets (sold separately) and the LEGO Friends: The Next Chapter online show, where kids get to know the characters of Heartlake City
Those details help position the set quickly. They tell us whether LEGO is emphasizing character content, action features, display presence, role-play potential or a specific scene concept. For Afol News readers, that is usually the difference between a simple catalog entry and a genuinely useful first look.

How it fits the wider Friends range
At 864 pieces and with an 8+ recommendation, LEGO 42703 Mermaid Roller Coaster Ride lands in a part of the range that should feel substantial without becoming inaccessible to its target audience. The pricing at $109.99 also gives a clearer sense of where LEGO sees this release inside its upcoming lineup.
It is still early, and a coming-soon listing does not tell the whole story about how a set will be received once it is actually on shelves. Even so, the official reveal already does enough to show the broad value proposition. Fans can see the build direction, the theme placement and the kind of experience LEGO is promising, which is exactly what matters at this stage.

Release date, price and first takeaway
Right now, the official LEGO listing puts LEGO 42703 Mermaid Roller Coaster Ride at $109.99 with a release window of Coming Soon on August 1, 2026. That combination alone makes the set worth noting, because it confirms that LEGO has moved beyond placeholder status and is now actively surfacing the product to shoppers through its own US storefront.
First impressions are solid. This looks like a properly defined new set with enough official information already available to support early coverage, and the gallery gives us more than just a token reveal image. We will see how the wider fan response develops as launch gets closer, but for now the important point is straightforward: LEGO 42703 Mermaid Roller Coaster Ride is officially live on LEGO.com as a coming-soon item, which is enough to treat it as confirmed new-set news rather than speculation.
