Previously were always talking about what's good with the new upcoming Nintendo DSi, now here's some bad news; well not really bad news but only for those who already own the original DS or the DSLite. The bad news is that Nintendo announced DSi-only and DSi-enhanced cartridges will be coming out soon. DSi-only means of course those games will only work for the DSi and DSi-enhanced means it will still work with old DS systems but it will have additional functionality with the new DSi. This really sucks because the bottom line here is that to experience those new features you have to shell out some cash. Now to sell that old DS..
Source: GDC09: DSi-only and DSi Enhanced cards announced.