With Nintendo launching the 3DS globally this year, rumours have suggested that the DSi will be phased out - it won't.
In the UK at least, with a representative stating that Nintendo "plan to still manufacture and supply DSi consoles in a range of colours in the UK in 2011", but it does of course depend on whether there's a strong enough demand for the sleeker DS in the different regions.
With sales still strong for the current DS/DSi selection, it seems there's still life for Nintendo's portable family well into 2011 and beyond.