Marvel NEW

Marvel NEW is Marvel Comics' answer to DC's the New 52.

Comics

 * Spider-Man and His Amazing Friends
 * Black Panther
 * Iron Men
 * Captain America
 * Ultron Beyond
 * New Warriors
 * Hawkeye
 * Exiles: New World
 * Thunderbolts X
 * Weapon X: Damnation

Timeline
TBA

The Regular Universe
With this series being a technical reboot to the entirety of the Marvel Universe, many changes, including light and heavy modifications, are present. The only exception of the series' rebooted nature is the Ultron Beyond limited series, which takes elements mostly from contents and happenings that were already in the regular Marvel Universe. And while the limited series' omnipotent effects have consequences, the entire universe is then restored to the state in which Marvel NEW is currently.
 * Spider-Man, Iceman, and Firestar are now back to being teenagers.

The Multiverse
The multiverse is actually relatively unchanged, with both old and new alternate worlds being added to the mix. Such examples include Earth-928 (Marvel 2099), Earth-311 (Marvel 1602), Earth-58163 (House of M), and others. Most of them stay the same, but one can guarantee that they're changed in some way or another. Still, alternate futures and divergent timelines exist in the multiverse, with an infinite amount of universes making up the multiverse.