I just checked my SUS and can confirm that I also see the 10.9.2 Update and 10.9.2 Update Combined with a date of 3.11.14

Has anybody installed this to see if there's a new build number?

i just built a 10.9.0 machine to test, downloading now, will report back shortly.

Build numbers appear to be the same from what I can tell. I just reloaded a machine with 10.9.1 and ran software updates on it to bring it to the "new" 10.9.2 and the build number is 13C64.

well i sort of ran into an issue, so it will be a while before i know anything.

I'm seeing the same change in the modification date on our SUS. I downloaded the standalone Combo Update dmg just now and its got the same exact date and contents as the one from 2/25/14, so those at least haven't changed… yet. I'll re-download it some time late today to see if anything is different. Wonder what caused the modification date on the SUS version to get updated? Such mystery….

is the updated date on both the combo and the non combo updates?
the only 10.9 image i have is the 603 version and i dont have the specific hardware and it doesn't update with the combo update I have a good regular .1 installer and base image so I can start from there but via the app store it will only get the smaller update. And the download site indeed shows 2/25 as the date for the .2 update. Of course they update the download page on a different schedule than the SUS stuff.

On our SUS, both the delta and Combo updates show a new modification date of 3/11/14. As for the standalone downloads, I only pulled down the Combo, not the delta, but the Combo had the same older date from 2/25/14.
Not exactly sure what's going on just yet.