Coronavirus restrictions: I want to book a holiday, what should I do?

The Times says if you are considering France or Spain perhaps wait. An announcement on changes is expected on Wednesday or Thursday next week at the latest. There is plenty of flight capacity so there are very few risks in waiting.

France remains on the UK’s amber-plus list, requiring all arrivals to quarantine for up to ten days, although there are hopes the measures will be dropped next week.

There are concerns that Spain could be added to a new “amber watchlist”, a warning that it could face quarantine restrictions or end up on the red list, with arrivals in the UK facing hotel quarantine.

https://www.thetimes.co.uk/article/coronavirus-restrictions-changing-eu-us-travel-amber-list-vaccines-wkk9pqfxb