That means that the high front-loaded default probabilities of corporate debt in the CDS markets are shifting further out in time and falling overall. The CDS curves that have been highly inverted for some vulnerable names are starting to flatten or even become normalized (spreads increasing with term).
As an example consider what happened to Ford CDS in just a month:
Nobody thinks Ford is out of the woods on a long-term basis, but it took mostly just a reduction in the front-end default risk to change the shape that much. To get a feel of how a drop in near-term default probability drives the shape of the CDS curve, here is a simple illustration. The chart below shows a hypothetical default probability curve (probabilities for each year).
With only the front-end probability of default dropping, the resulting change in the shape of the CDS curve is as follows:
This effect is now seen across the corporate credit markets, with CDS curves changing shape this way. A spectacular example of that is seen in the financials. Consider the Goldman 1-year CDS spread. It is now at pre-crisis levels. According to the market, the government has succeeded in taking out the risk of a major financial institution failure.
And here is what the Goldman CDS curve looks like now, a month ago, and a quarter ago.
These moves in CDS curves are unprecedented. The markets are saying that in the corporate sector we are close to being back to the pre-crisis "normal". The question of course remains as to whether this is justified by the fundamentals or sustainable.