New Album / Spring tour for 2011 announced 
New Album 『dead stock』 2011.2.23 Release
12 tracks, including 「one way」「sleep」「レイン」「cosmetic」and 「乱舞のメロディ」.
【First Printing Type A （CD+DVD）】
Item number KSCL1750-1751
価格 ￥3,800 （tax in）
【First Printing Type B （CD+DVD）】
Item number KSCL1752-1753
価格 ￥3,800 （tax in）
【Regular Edition （CD）】
Item number KSCL1754
価格 ￥3,100 （tax in）
They're also doing a promo tour next spring, "dead stock TOUR 2011," which includes two-day stops in Sendai, Osaka, Tokyo (at Yoyogi) and others.
adding to this awesome news... SIDNAD vol.6
SIDNAD Vol.6 ~LIVE2010~
2011/3/16
comprising of live footage from both SID Summer Festa 2010 (Saitama Super Arena) and Year End Climax 2010 (Tokyo Dome live)
Available in 2 versions,
2DVD for Y7800
2DVD+BD for Y9800
BLU-RAY 3D.
SID IN 3D. 
All on their website, I think maybe it was put up after Tokyo Dome ?