The following was posted this morning at DBSTalk
From Dish:
P285 - The primary update is to add QAM capability for the ATSC tuner. This would support installations in Multi Dwelling Units (MDU) applications such as apartments and hotels where they use DISH Network service converted to QAM. Obviously this does not apply to single family residential systems except that the software must support both modes of operation without adversely affecting the installed base. That is why this release is getting a lot of careful testing. The release is expected to go out by the middle of February. Most customers will see the an expanded capacity favorites list and a search feature for the EPG. There is also a part of Dolby compatibility improvements in this release which changes the way a validity bit is set in the SPDIF header.
P286 - Planned for mid March, this release will extend the program guide to approximately 3 days and support for an interactive feature called "triggers" will be added. Some improvements in MPEG decode performance and further work on open Dolby compatibility issues are also being attempted for this release.
The caution is that all software releases are subject to successful testing. Fixing problems encountered during test can affect the release date.