^
While watching the (in)famous DG trailer I spotted some little buggers flying while our mighty hero use his brand new Elder Scroll.

These, as some of you(majority!!!!xD)said: "butterflies!!! OMGOMG", are, in fact, Ancestor Moths/ Gypsy moths.


some sources used:
http://www.uesp.net/wiki/Lore:Ancestor_Moth_Cult
http://www.uesp.net/wiki/Oblivion:Temple_of_the_Ancestor_Moths_%28settlement%29

As reading the scrolls progressively makes you lose your sight, the now-blind priests live their life of leisure at the monastery, tending the Ancestor Moths, harvesting their silk and spinning it into bolts of cloth.


There's only 1 place where the silk is being harvested - that famous temple in Jerall Mountains.
And we seen plenty of these little critters flying somewhere.(apparently near some nice-looking (Kyn's) Tree)

ERGO:
1. It's just the Elder Scroll reading eyecandy effect
2. "Obtain the Elder Scroll from Ancestor Moths Monastery" Quest hint.


Opinions?

Maybe, its all speculation, and its as good a theory as any other

Hmm, maybe we'll visit the northern part of Cyrodiil.

It might just be hey look at the pretty moths... but the trailer did mention getting the elder scrolls so it could be either way..

personally i think it was "eye-candy", perhaps a hint that you will be reading the scrolls.. well i say read but more likely be blinded by over the top lights and visuals when you try to open it.