Well, that’s according to The Kiplinger Letter

The postal rate hikes we forecast for 2007 are coming in May. Lobbying by businesses against the increases won’t derail them. The hikes are still in the pipeline, though delayed by a few months.

Further rate rises are likely in 2008: First-class stamps, up another 1ยข, and an increase in business rates of 3% across the board. The U.S. Postal Service wants to adopt these increases before 2009, when a new pricing law takes effect. It will let the USPS raise rates on an annual basis but by no more than the prior year’s inflation rate.