Here's an interview (with 2 new images) that reveals a little bit more about the level sharing and DLC (it's free!)
1UP: Can you elaborate on how level sharing works online? Will EA approve each level? What will be the process from creating a level to seeing it appear online?
AR: Once a user has created a new level, they can submit it to EA. EA will review submitted levels, filter out any inappropriate content, and make a selection of them available to the community. This process does not apply to the Wii Friends feature. Users will have unfiltered access to any level created by anyone on their Wii Friends list. Users can also search for and rate the levels that are made available.
Additionally, EA will periodically provide additional levels that have been created by the development team available for download. These new levels will consist of brand new content that builds on the many great game modes offered in Boom Blox Bash Party as well as classic levels from the original Boom Blox.
1UP: How would you compare the level sharing system to the one in Little Big Planet?
AR: Our focus when building the level sharing system for Boom Blox Bash Party was to make it as easy as possible to gain access to post-launch content generated by EA and by users. For example, when a player enters a multiplayer mode, they can either play the levels that are on the disc, or with a single click, they can connect to the level sharing system and gain access to every level of the same game mode that is available online. They can then save these levels to play later, remix, and upload. Also, players will have the ability to do text searches, allowing them to search for very specific levels or game modes.
1UP: Will there be any costs involved with downloading EA-created or user-created levels?
AR: The only costs the user will incur are their own Internet costs. There will not be an additional charge from EA to download levels.
1UP: Initially, EA announced that you guys had signed a three project deal with Spielberg. Being a sequel, does this count as the second of those three?
AR: Our partnership is for three new original franchises so as a sequel, Boom Blox Bash Party does not count as one of those three.
EDIT: more info.
- no Friend Codes reconfirmed
- rate and rearrange downloaded levels
- Spielberg may make his own level to be included in the game
- slingshot effect added: grab an object with the Wiimote, pull back and release to send it flying
- shooting mechanic from the first game will be used much less
- head-tracking will not be included
- no support for Wii MotionPlus
- nothing recycled from the first game
- new block shapes discussed: cylinders, ramps and more
- character blocks from the first game are now integrated more into gameplay
- could there be a Boom Blox movie? - “He (Spielberg) actually has expressed interest in it at different times, but it’s not something we’re discussing at the time.” - producer Amir Rahimi
- EA stressed that the movie idea was just a brainstorming session, and there are no actual plans
Source.