Garmin barely met their March deadline for rolling out BirdsEye aerial imagery. It showed up late yesterday in the form of updates to their BaseCamp software and firmware updates for eligible units — the Colorado and Oregon series; there remains some question about whether both Dakota models are compatible – the Dakota 20 is for sure (more on that below).
EDIT: We’ve learned that Garmin decided not to support BirdsEye imagery on the Dakota 10, due to its lack of an expansion card slot.
To get started, run WebUpdater and download or update BaseCamp. Once you start BaseCamp and connect your unit, you should get a message asking if you want to create BirdsEye imagery for your device. You can download a low-resolution demo for free or pony up $29.99 for a year of downloads.
I’m posting a couple of images here. I haven’t used them out in the field yet, but they appear washed out on the screen of my Oregon 400t. The one at left is Panther Stadium in Charlotte; below is a high elevation bald in the Rocky Fork tract, a new 10,000 acre public land acquisition near the NC/TN border. The resolution available for that area does not allow me to pick out forest roads, limiting its usefulness. This is an early test though; other areas may have higher resolution imagery available. In more open terrain (e.g., western US), you might be able to pick out trails and 4WD tracks, even at this resolution.
The BirdsEye aerial / satellite imagery subscription program for the Garmin Colorado, Dakota and Oregon series is now official. EDIT: I’ve learned that Garmin decided not to support BirdsEye imagery on the Dakota 10, due to its lack of an expansion card slot. I have a few tidbits to add to my 
EDIT: I’ve learned that Garmin decided not to support BirdsEye imagery on the Dakota 10, due to its lack of an expansion card slot.
I didn’t think this would take long. Some of the more technically adept GPS enthusiasts among us have put together some great tools for creating custom maps for the latest generation of Garmin handhelds. Here are two new ones released in the last day or so. Both allow you to create maps without manually calibrating them in Google Earth.
Garmin has added support for custom raster imagery to the Colorado, Dakota and Oregon product lines. This will allow you to add aerial photos, USGS topo maps, etc. to your device. You’ll need the latest beta firmware for the units (betas have not been posted for all units yet), but the process is laid out in 
in for testing, and I thought I'd share some initial impressions since this unit is due to become available in the next week or two.
