The phrase "early promise" means showing potential or talent at a young age or in the beginning stages of something. It suggests that someone or something has the potential to be successful or achieve great things in the future. Full definition
Patients who had changed versions of this gene showed early promise, often attending college, but then experienced cognitive decline consistent with a degenerative disease. (sciencedaily.com)
Despite early promises that the issue would be addressed, on the final day for consideration, it failed. (miamiherald.com)
One such game was met with a lot of early promise when it was revealed over two years ago. (newgamenetwork.com)