RHEL 7 ended "Maintenance Support" in June 2024. "Extended Life Cycle Support" (ELS) ends in June 2028. DevProd has not yet deprecated the RHEL 7 distros, but they highlight the past Maintenance Support deadline; they do not mention the Extended Life Cycle Support deadline.

Per RHEL docs, RHEL 7 provides GCC 4.8.x, which has "incomplete support" for C99 and partial ("most") experimental support for C++11 per docs. RHEL 8 provides GCC 8, which has "substantially complete support" for C99 and "full" support for C++11 per docs. Dropping task coverage for RHEL 7 would also allow us to drop support for GCC 4.x compatibility.

Note: the Linux kernel also recently (May 2025) raised their minimum GCC version compatibility requirement from GCC 5 to GCC 8.