Oracle recently confirmed, via an updated Oracle EBS Roadmap, that there will be another major Oracle EBS release (12.x) and that this release will be supported through 2030. Additionally, there will be point releases coming between now and the next anticipated major release in 2019-2020.
Here are the Oracle blog posts and press releases that reference this announcement:
Blog Post: Exciting Update to the Oracle E-Business Suite Release Roadmap
Press Release: Oracle E-Business Suite Roadmap Update
Quoting Oracle's Roadmap Update, "This update to the Oracle E-Business Suite roadmap should reassure customers who run critical operations on EBS that their system will continue to be supported and enhanced for years to come, and that we will work to bring the value of Oracle's Cloud Infrastructure and Applications to customers who want to continue leveraging their investment in EBS."
The Oracle experts at Tier1 would be happy to discuss any questions regarding EBS support, upgrades, hosting, cloud transition, or Oracle SaaS coexistence you may have after reading the articles above.