The fares are already a fair bit more next summer versus last summer.
An anecdotal example, I'm looking at an Alicante fare for a birthday party, and at the moment, it's £288 Rtn for the 2 of us in May. Last year similar dates were about £68 Rtn for 2, and we are no where near may yet.
The capacity due to come online will help bring the fares down a little, but it's interesting that a lot of the new capacity coming online isn't always going to replicate the Monarch loss. Monarch didn't serve Ponta Delgada, Tallinn or Genoa, for example.
All will be revealed in time, just because nothing has been made public, doesn't mean nothing is happening or likely to happen. Easyjet is going to be the big one to watch.