Here is something for the NWR tip line, and it's gonna need their NWR Japanese correspondent to translate,
source: today's Nikkei morning post
http://blog.livedoor.jp/jim115/archives/51286284.htmlaccording to the article,
-All specs and functions of the new model are the same as the current DSi, only difference is that the new screen is larger, now 4" (current DSi = 3.25")
-Retail price remains the same, 18900 yen
-To be released this year in Japan, outside of Japan release is still being discussed
My guess is that 3.25" upgrade (DS screen = 3") wasn't enough of a difference to push current DSPhat/DSLite owners into double dipping and upgrading to the DSi fast enough. Also 4" screens probably didn't cost much more to produce so it was almost like a free upgrade for Nintendo.
Only question I have is what is the new screen resolution?
Originally found on NeoGAF