Don't really know what you mean. We got a dashboard overhaul on the xbox today, that some people here apparantly thought was a Skyrim update, if that's what you're hinting at
not DLC has been announced or mentioned. Unfortunately bethesda has decided to focus on bugs it seems. I say unfortunately because what few bugs I've ran into are very minor and I'd rather have more content than bugs fixed that I probably didn't even know exists. Despite all the updates all the bugs I saw in fallout 3 and NV were still there almost a year (or more) after the release and thus remained unfixed. I played oblivion after FO3 came out so that was after all all the updates. I think thats the most stable and bugless out of all four games.
The first Skyrim DLC will release between February and November 2012.
I think they have been working on something since E3.. That's when they started to get approached about DLC.. And many think a first or second could be a High Rock expansion but in Tamriel scale and not Daggerfall.. Todd Howard said something like he wanted to redo Sentinel and Daggerfall because he didn't think they were the way he exactly wanted.. Also I heard they were announcing it this month or the next..
The 360 gets the first 2 DLC's a month early.. And their will be 5 DLC's..