Mark Ruffalo & Hulk Confirmed For Thor: Ragnarok
Deadline confirms the news, as the site is essentially an "unofficial" voice for various Hollywood sources.
A second as-of-yet unconfirmed rumor also recently surfaced surrounding the Hulk and new director Taika Waititi stating Waititi was brought on board Thor 3 to lighten up the script and add in some humor as Marvel felt the Chris Yost-written script was too serious and dark. The same rumor also saw hints of Planet Hulk.
Thor: Ragnarok has a November 3, 2017 release.