This is encouraging. It appears to work against the omicron variant.
We're currently using the first generation of vaccines. Consider those a minimum viable product. They mostly work, need to be stored cold, have short shelf lives, don't cover enough variants, and are injection drugs.
The next generation of the technology is in development. Some vaccines in test are nasal sprays.[1] Some are pills.[2] Some have broader coverage. There are over a hundred vaccine projects underway.[3] Some will succeed, some won't.
[1] https://med.stanford.edu/news/all-news/2021/11/effort-to-dev...
[2] https://www.precisionvaccinations.com/vaccines/vaxart-covid-...
[3] https://www.raps.org/news-and-articles/news-articles/2020/3/...
