UPDATE 9/4/15 3.00pm: Amazon.co.uk has opened pre-orders for the Lego Dimensions Starter Pack (£99.99 on PS4/Xbox One, £89.99 on Wii U and likely PS3/Xbox 360 too) and its array of launch extras.
The Lego Dimensions Starter Pack contains three characters - Gandalf, Batman and Wyldstyle, plus the Batmobile, base game and NFC portal.
Lego Dimensions Level Packs (containing one character, two vehicles, one game level) cost £28.56. One is currently available - Back to the Future.
Lego Dimensions Team Packs (containing two characters, two vehicles) cost £29.99. Again, one is currently available - Ninjago.
Then there are the Lego Dimensions Fun Packs (containing one character, one vehicle) which cost £14.99. There are currently 13:
- Lord of the Rings: Gollum
- Lord of the Rings: Gimli
- Lord of the Rings: Legolas
- Ninjago: Nya
- Ninjago: Jay
- Ninjago: Zane
- Lego Movie: Emmet
- Lego Movie: Benny
- Lego Movie: Bad Cop
- Lego Movie: Unikitty
- DC: Wonder Woman
- DC: Cyborg
- Wizard of Oz: Wicked Witch of the West
Total all of that up, and if you're playing on PS4/Xbox One you're looking at £350.44 for the lot.
UPDATE 9/4/15 2.00pm: Warner Bros. has now officially confirmed Lego Dimensions, which will launch in the UK for PlayStation 3, PS4, Wii U, Xbox 360 and Xbox One on 29th September.
DC Comics, The Lord of the Rings, The Lego Movie, The Wizard of Oz, Lego Ninjago and Back to the Future are among the franchises set to be supported.
"A small sample of packs available in 2015 include the Back to the Future Level Pack with a LEGO Marty McFly minifigure, a Lego Ninjago Team Pack with Kai and Cole minifigures, three Ninjago Fun Packs with Jay, Nya and Zane minifigures, two DC Comics Fun Packs with Wonder Woman and Cyborg minifigures, three The Lord of the Rings Fun Packs with Lego Gollum, Lego Gimli and Lego Legolas minifigures, four The Lego Movie Fun packs with Emmet, Bad Cop, Benny and Unikitty characters, and a The Wizard of Oz Fun Pack with a Lego Wicked Witch of the West minifigure," Warner Bros. stated.
"Additional packs to round out the 2015 assortment will be announced in the months leading to launch. Further waves of expansion packs will be released regularly following the launch of the game and into 2016.
"Future expansion pack purchases will continue to work with the Starter Pack, even in the fall of next year. No compatibility chart necessary." Zing.
ORIGINAL STORY 9.4/15 1.22pm: Lego Dimensions, the company's much-rumoured entry into the toys-to-life games genre, features characters such as Batman, Gandalf and The Lego Movie's Wyldstyle.
Details of the franchise's Starter Pack have leaked via Reddit ahead of an expected official announcement later this afternoon.
The pack contains the Lego Dimensions game, a Lego Toy Pad (think Skylanders' portal), a selection of bricks, three minifigures (Batman, Gandalf, Wyldstyle) and a Lego Batmobile vehicle.
Further confirming the leak, product listings for PlayStation 3, PS4, Xbox 360 and Xbox One have all now appeared on the US Toys R Us website.
A press release for the franchise's other content also mentions Back to the Future's DeLorean car, DC Comics' Wonder Woman and Lego's own Ninjago series.
Lego has been teasing an announcement for today with the hashtag #BreakTheRules, referring to Dimensions' capabilities for mixing up various franchises.
We've contacted publisher Warner Bros. for more comment, and expect to hear more details later today.