I know that the DMG addresses this slightly on page 143 by stating that a character's wealth is equal to:

One magic item of character level +1

One magic item of character level

One magic item of character level -1

As far as gold pieces are concerned the formula is laid out on page 223 of the PHB in that a character has gold pieces equal to the cost of a magic item of their level -1.

At first glance this seems just fine for most of the Heroic Tier, but seems very underpowered towards the end of Heroic and onwards.

My question is: Has there been errata for character wealth, and/or is there a table of character wealth by level for 4th edition?