At 6:00 UTC Thursday, the Stargate upgrade of Cosmos will go live. The Cosmos community recommends that interested observers follow along by watching the @cosmos account on Twitter.
Stargate represents an important milestone for the Cosmos project on the way to launching its inter-blockchain communication (IBC) protocol that will allow the 200+ Tendermint-based blockchains to interoperate easily. The era of cross-pollinating blockchains is very nearly here.