Saurik has just updated the Cydia Store, the shop for jailbroken devices. The menu of this refresh, not new features, but changes cosmetically. We are entitled to a more modern and flat design, as is the trend now.
Old look New look
It seems that this update is a response to iMods of the competitor Cydia project piloted by the developer behind JailbreakMe Comex. It is true that the Saurik shop is getting old and it became necessary to give a facelift to continue to attract users, especially when iMods out.
See also: Upscale (change the resolution of your iPhone), NCBrowser (A web browser in the Notification Center), and The best Cydia Sources/Repos.