Pension release means taking money early from your pension. As long as you have the right type of scheme, you can take as much of your pension savings as you like.
There are lots of different reasons why people want to release money from their pension, not least of which could simply be that you are now retiring and want to access the money from your pension to help with daily living expenses.
For others, it could be about paying off debts, starting a business, travelling and many, many more reasons.