One of the adjustments in this update is "Added an effect on the main interface's “Battle” button when timed game modes are open." And it is indeed different. The sword is glowing now that Castle Crisis is up.
Unfortunately, it is not all that helpful. What should be glowing is Castle Crisis icon in battle strip to draw attention to Castle Crisis. Otherwise it is "one of those things needs your attention but we are not telling you which one".
While we are talking battle strip, any good reason why LR is not on it? It is certainly more useful and accessed more often than things like Lab.
Name: Rusty (Rustyx in game)
Guild title: resident wisenheimer.
Line ID: Rustytroll (big shock there, eh?)