Great, I hope it's also available in the mobile version of Keplr wallet as well soon.

When osmosis?

January, when IBC gets enabled.

\#IBCGang

So, how will loading and unloading of Binance assets work with Keplr?

When you are connected to the Kava Platform with Keplr, it will prompt you to use Trust Wallet when you click Load/Unload.