I think so. I mean patch 1.6 is supposed to introduce mounted combat...mounted combat is one of the "new" features, uhm, featured...in the Dawnguard trailer. Those who have the beta patch and cracked it have found some interesting files hinting at the Dawnguard content... Is it possible they missed a few files? Maybe something vampire related?

Okay, so I'm aware that this is pretty far-fetched and must seem silly to most of you, but at the very least I think one can assume 1.6 is something like a prep patch for Dawnguard.

Well, it definitely is, in part, a prep patch (which is a common practice these days), Dawnguard will cost $20 and 1.6 will be free

Not to mention it is already summer...we have the beta patch...if we can expect patch 1.6 official tomorrow (figuratively speaking) then can we expect Dawnguard next week? (realistically I don't see patch 1.6 coming out for at least three more weeks if not a full month, and Dawnguard probably won't follow until late June or something)

Yeah, I think 1.6 will probably come out before Dawnguard, especially because Dawnguard comes out on X360 first, while patches are more likely to release on PC first.

That wasn't really my point...of course 1.6 will be out first...after all its only a patch, not an entire add-on.
My point was we should be seeing both soon...granted 1.6 will be sooner, but again that wasn't my point.