http://www.neogaf.com/forum/showthread.php?p=18471596#post18471596
Apparently, there's a guy over at 2chan who attended a Nintendo retailer's briefing on Last Window and Zangeki no Reginleiv, and he's been posting some info on the two titles. Duckroll of NeoGAF translated his comments on Last Window. (Side-note: The fact that it still supports the rumble cart rules out it being a DSi exclusive)
[quote name='duckroll']I'm going to take a stab at the Last Window impressions, since no one else seems to have bothered translating it.
Basically the retailer staffer posting about the game gives a rundown on the new features of the sequel, while talking about various interface improvements from the first game. In general the game is very similar to the original in terms of visual and audio style, and fans of the original will feel right at home. The game takes place a year after the original, and is set in 1980 in Los Angeles. The setting of the sequel is in the Cape West Apartments. The story in the sequel stands alone from the previous games, even though there might be connections that fans of the original can pick up on. Those who have not played the original will not feel particularly lost in this game.
The main character is still Kyle, and he's still a dick. It's all good though, because fans will probably not have it any other way. There are two major additions to the sequel he mentions. One is the ignore function. In the original game, progression is pretty much always made when you butt into other people's problems in conversations, etc. In the sequel, more attention will have to be paid when you decide whether you want to butt in or to ignore something, because there is a possibility of getting a game over if you butt into everything. At least, that's what I think he's saying.
As for the other major feature, there is a novel inside the game called "Last Window" as well. It is a companion piece to the game, and a chapter unlocks each time you clear a story chapter. The novel will touch in various sub-scenarios which flesh out the events of the game outside of Kyle's immediate adventure, and involves the overall setting in the game and the other characters. Apparently the contents of the novel (which I assume is actually being 'written' as you play the game) is influenced by your choices in the game itself, so there is replay value in trying to discover all the "variations" in the novel.
He also mentions that the game supports the rumble cart, and that it has 3 save slots. There is no detailed report on Reginleiv yet, but he will put one up later tonight. He mentions the game supports both Motion+ as well as the classic controller and that it is a surprisingly violent game. You can target the heads and limbs of enemies in the game, and slice off both heads and limbs complete with blood effects. It definitely earns the CERO D rating. The setting of the game is an EDF style action game pitting young deities against a race of giants. The free online play is for co-op, and supports up to 4 players. There will be weapon customization, featuring over 300 different weapons.[/quote]