Update: Oops! Looks like Google classified this one as dead just a bit too early – it's back for a thirtieth go in the Play Store. If you want one, you should probably buy it now before they really do disappear forever.
Shortly after slimming down the Play Store's selection of Nexus 7 cases, it looks like Google has brought out the axe again, this time aiming it at the Nexus 4 Bumper. The bumper, which enjoyed an absolute roller coaster ride during its tenure, finally ended its on-again-off-again relationship with the Play Store today, with no warning at all. In fact, the case just got restocked yesterday.
Whether this is a permanent move is uncertain, but things don't look good for the bumper given the fate of other items that have gotten the "no longer available for sale" treatment (ahem Nexus Q, Nexus 7 covers).
What's also uncertain is why Google would trim the bumper from the lineup. When considering that the Nexus 7 covers disappeared (except for a few) just the other day, one could speculate wildly about whether this is because the accessories will soon be obsolete. There's no way of answering this question for now, but it's an interesting move to be sure.
Source: Google Play