Tonight Apple sent out an iPhone update to developers, giving them access to OS 3.1 beta 2. The first beta version of 3.1 introduced many refinements to the big 3.0 that Apple released last month, including non-destructive editing of videos, and the ability speak voice commands over a bluetooth connection. 

In the update documentation, Apple doesn't mention any major changes to the original 3.1 beta, but this secondary release of 3.1 could mean that the consumer update might be nearing.

Via MacRumors