Welcome to the site from the beautiful and (tonight, anyway) COLD state of Tennessee!
I haven't heard anything about a 2010 SERG since before the dealer show in July when they introduced the 2010 models. I'm pretty sure the 2010 SESG replaced the SERG in the CVO lineup. If the MoCo does surprise us all and introduced a revised SERG in the 2010 lineup with lowers and a tourpak, I'm sure they'll find some takers. Those have been popular add-on items for many 09 SERG owners.
If you want an 09 SERG, there aren't a lot left. However, I know that Longhorn Harley Davidson in Grand Prairie, Texas -- southwest of Dallas on Interstate 20 -- has two Silver and Titanium 09 SERGs sitting on the showroom floor. They also have two 2010 SESG, for what it's worth.
Welcome and good luck!
RickC