Intel has announced that its Haswell architecture, due to ship some time in 2013, will include hardware support for transactional memory.

Transactional memory is a promising technique designed to make the creation of reliable multithreaded programs easier. It does this by using a transactional model wherein complex operations can be performed concurrently, in isolation from each other, with those operations either completing or being undone as if they'd never been started—a model that developers are already familiar with from database programming.