Information continues to trickle out of the recently leaked Windows 8.1 Update 1 build. _A report by WinBeta show a variation of the popular Aero Glass theme can be enabled in the build: It also appears Microsoft may be working on a return of_the highly popular Aero Glass theme._From what can be enabled in the recent Windows 8.1_Update 1 leak,_looks like_a variation of the Glass theme can_be enabled._In this build, it’s extremely buggy and doesn’t work as intended to. Dragging windows with Glass enabled lags and leaves many UI errors. So this is definitely a work in progress. The primary reason cited for the removal of Aero Glass was the impact on battery life. _Are you looking for to Aero Glass coming back? Source: WinBeta
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