As well as this regular maintenance two English Battlegroups (Reckoning and Ruin) will be receiving optimizations to their instance capacity. This will mean an extended outage on Wednesday until 5pm CEST and also a further outage between 3am and 7am on Thursday. I'm sure players on these servers will be glad to finally join those who have already received this optimisation to help resolve the Door Boss issue. Full list of realms impacted after the break.
Realms being optimized: