Omicron is the name of the new Covid variant and it seems alreday reaching European countries. UK and Belgium see committed cases.
"Omicron variant 'likely' already in Germany, says minister" based on a DW article. Also Czech Republic, the Netherlands and others identified suspect cases. The German case landed Nov 21, so if infected with new variant enough time to spread it.
Currently nobody knows exactly how dangerous it is but experts seem to be concerned. Some are "cautiously optimistic that widely vaccinated population will avoid serious" effects.
Leading institutions and vaccine manufacturers such as BionTech are researching already.
Actual situation in a lot of countries is serious enough already, an additional new variant might boost it even worse.
What are your opinions on how will Omicron affect travel?