This is the first wasmd release built on Cosmos SDK v0.40.0 final, aka Stargate. It is fully compatible with the IBC version to be deployed on the Cosmos Hub (and many other networks in Q1 2021 and beyond).
It also included and updated wasmer virtual machine, wasmer v1.0.0, with improved performance and stability.
We will be adding more IBC features in the next few releases, but you can already transfer tokens from other chains and use them in your contracts.