Powered Rail

The Power rail is a block to be added in Version 1.5. They will replace bug boosting (boosters will still work after the update). It was tweeted by Jeb first to prepare texture pack makers where it will be. It will have 2 states, powered and unpowered. Power rails will most likely be crafted with gold and sticks.

Jeb also tweeted about a Detector Rail which will act as a pressure plate combined with a minecart track, a normal pressure plate would slow the minecart but it will keep going over the detector rail.

The recipe for power rails will most likely be six gold ingots and a stick, similar to normal rails.