Lineage2.com has just announced that Glory Days expansion is on its way. There are a number of changes to the game coming, the patch notes can be viewed on the Tera Gamers Wiki.
The patch is supposed to go live on the 24th of September, exactly one week from today.
For those of you who have not looked into purchasing your +15 weapon, you will have a chance again in the week following the release of Glory Days.
I wish you all the best of luck in your endeavors!