Guild Wars 2

Will be able to upgrade current exotic weapons from Mystic Forge like Foefire’s Essence to ascended version when the ascended weapons will show up?

The same option as the Triforge Pendant had.
http://wiki.guildwars2.com/wiki/Triforge_Pendant exotic
http://wiki.guildwars2.com/wiki/Triforge_Pendant_%28ascended%29 ascended

yes yes thanks for bringing this up they should do this because many exotic weapons are quite difficult to craft. Mjolnir is pretty much a legendary on its own. I think they will let you make them ascended in a similar wayt to the triforge pendant or to how prototype fractal capacitor is taken in stages.

I think the only reason why they gave us that option for the triforge was due to the immense cost to making it.

While you can make the same argument for Foefire, it’s just a skin. While the triforge is made for stats.