New PTR build went up. DRW had its duration reduced.
As taken from mm-champion.com
Class Changes
Blood
* Dancing Rune Weapon now lasts 5 sec plus 1 sec per 10 runic power. (Down from 10 sec plus 1 sec per 5 runic power)
Glyph Changes
Death Knight
* Glyph of Dancing Rune Weapon -- Increases the duration of Dancing Rune Weapon by 5 sec. (Down from 10 sec)
I think that DRW needed some adjusting, but this recent change went a little too far. Hopefully, Blood DPS won't suffer much.
Edited, Mar 24th 2009 8:45am by NeithanTheWronged