The Kobo Aura H2O came out in 2014 and was due for a refresh, but on the other hand, e-readers have been perfectly capable of performing all tasks for a couple of years **w, so it's hard to pinpoint what, exactly, needed to be updated.*
Kobo took the simple route and simply gave the device a number of small improvements across the board, while leaving the launch price the same: $179.99 in the U.S.