The rumor of a bigger screen DSi was just made official by Nintendo. Shipping November 21st in Japan, the 4.2-inch DSi LL is priced at ¥20,000 (about $221). The above comparison is straight from the Big N showing the DSi LL vs. the white DSi. Besides the obvious increase in height and width, the 21.2-mm handheld is chubbier than the 18.9-mm DSi but slimmer than the 21.5-mm DS Lite when it ships in your choice of dark brown, burgundy and natural white. The battery seems to be roughly on par with the DS Lite going for about 4 to 5 hours on maximum brightness and intensity or 13 to 17 hours when dialing back the display to its lowest settings.
No word on US or international shipping yet. Also Nintendo issued a statement saying, "a new Nintendo DSi XL console is launching in Europe in the first quarter of 2010." Note the change in name from LL to XL. Unfortunately, no price was announced.
I know Nintendo loves to release new products to keep people interested but they also love to kill off their own consoles/handhelds.