The most recent Windows Phone update from Microsoft is indicating the Samsung Focus v1.4 update may happen sooner than later.
Eric Hautala is reporting that v1.4 has been tested by AT&T and Microsoft is now expediting scheduling. It is expected in the next 24 hours Microsoft will be able to tell consumers when to expect to see the update alert on their Focus.
Once alerted, you will receive two back to back notifications. First will to install the 7008 update and then you'll move to the 7392 update (which includes the 7390). If you need to refresh your memory on updating instructions, Microsoft still has the Update Central site up and running for help and how-to directions.