Order volume precision has been increased to 3 decimal places in Kraken market data. Order volume data is still being rounded up as stated above, except now it's being rounded up in the third decimal place.

So, for example, an order with an actual volume of 1.0341 will appear in the order book as a volume of 1.035.

We hope this level of volume precision is more convenient for everyone and appreciate our users openly communicating with us about the features they would like to see on the exchange.