What a bloody awesome chapter!!!!
I knew it though! Obviously the dragons were going to come through the gate, which others have stated on here before, think about it there is no way '10000' dragons will come out of no where without anybody actually noticing them even from a far distance don't you think? Where would they be hiding? Plus I've had this theory in my head since they mentioned eclipse, two different people from the future and when Natsu could sense evil from future Rogue but haven't had the evidence to back it up until now, that he was working with the dragons (from his time) and/or someone else for that matter to open the gate in the past but I haven't been able to figure out with details due to the little information provided to us but sooo many things going through my head at the moment!
I knew something was off about the whole situation!
Now I can see either of these things happening...those dragons that do exist now (which I assume are the ones who want humans and dragons to co-exist except acnologia of course) will come and fight the past dragons coming thru the gate after Lucy closes the gate OR Natsu/Gajeel/Wendy/Rogue/Sting somehow manage to take them on and win which would be true FT style lolz.
Then leaves the issue of future Rogue of course hmmmmm.